{"id":53860,"date":"2026-05-15T12:49:37","date_gmt":"2026-05-15T12:49:37","guid":{"rendered":"https:\/\/xtmim.com\/?page_id=53860"},"modified":"2026-05-18T01:35:18","modified_gmt":"2026-05-18T01:35:18","slug":"conception-de-la-piece","status":"publish","type":"page","link":"https:\/\/xtmim.com\/fr\/mim-design-guide\/part-design\/","title":{"rendered":"Conception de pi\u00e8ces MIM"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"53860\" class=\"elementor elementor-53860\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6ced7fa e-con-full e-flex cmsmasters-bg-hide-none cmsmasters-bg-hide-none cmsmasters-block-default e-con e-parent\" data-id=\"6ced7fa\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-87e5e4d e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"87e5e4d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-39c497c cmsmasters-breadcrumbs-type-rank cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-cmsmasters-breadcrumbs cmsmasters-widget-breadcrumbs\" data-id=\"39c497c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"cmsmasters-breadcrumbs.default\">\n\t\t\t\t\t<div class=\"cmsmasters-widget-breadcrumbs__container\"><div class=\"cmsmasters-widget-breadcrumbs__content\"><nav aria-label=\"breadcrumbs\" class=\"rank-math-breadcrumb\"><p><span class=\"last\">Home<\/span><\/p><\/nav><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6d8b259 elementor-widget__width-initial cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-heading\" data-id=\"6d8b259\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;cmsmasters-fade-in-up&quot;}\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">MIM Part Design Guidelines for Complex Components<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2f156cc cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-text-editor\" data-id=\"2f156cc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>MIM part design is the engineering review of whether a metal component can be molded, debound, sintered, inspected, and produced consistently through metal injection molding. It is not only a CAD geometry check. A good MIM part design must consider overall part size, wall balance, holes, slots, undercuts, functional surfaces, sintering support, shrinkage behavior, tolerance strategy, and secondary operations before tooling begins. For design engineers, the practical question is not only whether the shape is complex enough for MIM, but whether the geometry can remain stable through injection molding, green part handling, debinding, high-shrinkage sintering, and final inspection. This page helps engineers review MIM part geometry before mold investment and decide when to request DFM, material, tolerance, or process suitability review.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b7603ca e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"b7603ca\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7629d57 cmsmasters-button-mobile-align-left cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-cmsmasters-button\" data-id=\"7629d57\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;cmsmasters-pop-in&quot;,&quot;_animation_delay&quot;:600}\" data-widget_type=\"cmsmasters-button.default\">\n\t\t\t\t\t<div class=\"elementor-widget-cmsmasters-button__button-container\"><div class=\"elementor-widget-cmsmasters-button__button-container-inner\"><a href=\"https:\/\/xtmim.com\/contact-us\/\" class=\"cmsmasters-button-link elementor-widget-cmsmasters-button__button cmsmasters-icon-view- cmsmasters-icon-shape- cmsmasters-button-size-sm\" role=\"button\" tabindex=\"0\"><span class=\"elementor-widget-cmsmasters-button__content-wrapper cmsmasters-align-icon-\"><span class=\"elementor-widget-cmsmasters-button__text\">Submit Drawing for Review<\/span><\/span><\/a><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9a13985 cmsmasters-icon-arrangement-together cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-cmsmasters-button\" data-id=\"9a13985\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;cmsmasters-fade-in-left&quot;,&quot;_animation_delay&quot;:800,&quot;_animation_mobile&quot;:&quot;cmsmasters-pop-in&quot;}\" data-widget_type=\"cmsmasters-button.default\">\n\t\t\t\t\t<div class=\"elementor-widget-cmsmasters-button__button-container\"><div class=\"elementor-widget-cmsmasters-button__button-container-inner\"><a href=\"#\" class=\"cmsmasters-button-link elementor-widget-cmsmasters-button__button cmsmasters-icon-view-default cmsmasters-icon-shape- cmsmasters-button-size-sm\" role=\"button\" tabindex=\"0\"><span class=\"elementor-widget-cmsmasters-button__content-wrapper cmsmasters-align-icon-right\"><span class=\"elementor-widget-cmsmasters-button__icon\"><i aria-hidden=\"true\" class=\"cmsmsdemo-icon- cmsms-demo-icon-arrows-1\"><\/i><\/span><span class=\"elementor-widget-cmsmasters-button__text\">Contact XTMIM Engineering Team<\/span><\/span><\/a><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-65e5be2 cmsmasters-icon-arrangement-together cmsmasters-block-default cmsmasters-sticky-default elementor-invisible elementor-widget elementor-widget-cmsmasters-button\" data-id=\"65e5be2\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;_animation&quot;:&quot;cmsmasters-fade-in-left&quot;,&quot;_animation_delay&quot;:800,&quot;_animation_mobile&quot;:&quot;cmsmasters-pop-in&quot;}\" data-widget_type=\"cmsmasters-button.default\">\n\t\t\t\t\t<div class=\"elementor-widget-cmsmasters-button__button-container\"><div class=\"elementor-widget-cmsmasters-button__button-container-inner\"><a href=\"#\" class=\"cmsmasters-button-link elementor-widget-cmsmasters-button__button cmsmasters-icon-view-default cmsmasters-icon-shape- cmsmasters-button-size-sm\" role=\"button\" tabindex=\"0\"><span class=\"elementor-widget-cmsmasters-button__content-wrapper cmsmasters-align-icon-right\"><span class=\"elementor-widget-cmsmasters-button__icon\"><i aria-hidden=\"true\" class=\"cmsmsdemo-icon- cmsms-demo-icon-arrows-1\"><\/i><\/span><span class=\"elementor-widget-cmsmasters-button__text\">View MIM Design Guide<\/span><\/span><\/a><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-41d60d5 e-con-full cmsmasters-effect cmsmasters-effect-type-transform e-flex cmsmasters-effect-hover-type-element cmsmasters-block-default e-con e-child\" data-id=\"41d60d5\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;position&quot;:&quot;absolute&quot;,&quot;cms_transform_hover_type&quot;:&quot;element&quot;}\">\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8b5278a e-con-full e-flex cmsmasters-block-default e-con e-parent\" data-id=\"8b5278a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-ecfe2ad e-con-full e-flex cmsmasters-block-default e-con e-child\" data-id=\"ecfe2ad\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6ac4943 cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-html\" data-id=\"6ac4943\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<style>\r\n.xtmim-mim-part-design{\r\n  --xt-primary:#0f3d66;\r\n  --xt-primary-dark:#082b4d;\r\n  --xt-primary-soft:#eaf3fb;\r\n  --xt-bg:#ffffff;\r\n  --xt-bg-soft:#f6f8fb;\r\n  --xt-border:#d9e2ec;\r\n  --xt-text:#1f2933;\r\n  --xt-muted:#667085;\r\n  --xt-accent:#d97706;\r\n  --xt-success:#17814a;\r\n  --xt-radius-sm:10px;\r\n  --xt-radius-md:18px;\r\n  --xt-radius-lg:28px;\r\n  --xt-shadow-sm:0 8px 22px rgba(15,61,102,.05);\r\n  --xt-shadow-md:0 12px 30px rgba(15,61,102,.08);\r\n  --xt-container:1600px;\r\n  --xt-font-base:16px;\r\n  font-family:Arial,Helvetica,sans-serif;\r\n  color:var(--xt-text);\r\n  background:var(--xt-bg);\r\n  font-size:var(--xt-font-base);\r\n  line-height:1.72;\r\n  overflow-x:hidden;\r\n}\r\n.xtmim-mim-part-design,\r\n.xtmim-mim-part-design *{\r\n  box-sizing:border-box;\r\n}\r\n.xtmim-mim-part-design a{\r\n  color:var(--xt-primary);\r\n  text-decoration:none;\r\n  font-weight:700;\r\n}\r\n.xtmim-mim-part-design a:hover{\r\n  text-decoration:underline;\r\n}\r\n.xtmim-mim-part-design .xtmim-container{\r\n  width:min(var(--xt-container),calc(100% - 32px));\r\n  margin:0 auto;\r\n}\r\n.xtmim-mim-part-design .xtmim-breadcrumb{\r\n  font-size:14px;\r\n  color:var(--xt-muted);\r\n  margin:18px 0 0;\r\n}\r\n.xtmim-mim-part-design .xtmim-breadcrumb a{\r\n  color:var(--xt-muted);\r\n  font-weight:700;\r\n}\r\n\r\n\/* Updated light hero section *\/\r\n.xtmim-mim-part-design .xtmim-hero{\r\n  background:\r\n    radial-gradient(circle at 82% 18%,rgba(15,61,102,.10),transparent 34%),\r\n    radial-gradient(circle at 12% 88%,rgba(59,130,246,.08),transparent 30%),\r\n    linear-gradient(135deg,#f8fbff 0%,#eef6fc 48%,#e7f0f8 100%);\r\n  color:var(--xt-text);\r\n  border:1px solid #d7e5f1;\r\n  border-radius:var(--xt-radius-lg);\r\n  padding:44px 36px;\r\n  margin:24px 0 28px;\r\n  overflow:hidden;\r\n  box-shadow:0 14px 36px rgba(15,61,102,.08);\r\n}\r\n.xtmim-mim-part-design .xtmim-hero-body{\r\n  max-width:1120px;\r\n}\r\n.xtmim-mim-part-design .xtmim-eyebrow{\r\n  display:inline-flex;\r\n  align-items:center;\r\n  gap:8px;\r\n  padding:7px 12px;\r\n  border-radius:999px;\r\n  background:#e5f0f8;\r\n  border:1px solid #c8dceb;\r\n  color:var(--xt-primary);\r\n  font-size:13px;\r\n  font-weight:800;\r\n  letter-spacing:.04em;\r\n  text-transform:uppercase;\r\n  margin-bottom:16px;\r\n}\r\n.xtmim-mim-part-design .xtmim-page-title{\r\n  margin:0 0 16px;\r\n  font-size:clamp(30px,4vw,54px);\r\n  line-height:1.08;\r\n  color:var(--xt-primary-dark);\r\n  letter-spacing:-.03em;\r\n}\r\n.xtmim-mim-part-design .xtmim-hero p{\r\n  color:#344054;\r\n  max-width:1040px;\r\n  font-size:18px;\r\n  margin:0 0 18px;\r\n}\r\n.xtmim-mim-part-design .xtmim-actions{\r\n  display:flex;\r\n  flex-wrap:wrap;\r\n  gap:12px;\r\n  margin-top:18px;\r\n}\r\n.xtmim-mim-part-design .xtmim-btn{\r\n  display:inline-flex;\r\n  align-items:center;\r\n  justify-content:center;\r\n  gap:8px;\r\n  padding:13px 18px;\r\n  border-radius:999px;\r\n  font-size:15px;\r\n  font-weight:800;\r\n  text-decoration:none;\r\n  border:1px solid transparent;\r\n  line-height:1.25;\r\n}\r\n.xtmim-mim-part-design .xtmim-btn-primary{\r\n  background:#fff;\r\n  color:var(--xt-primary-dark);\r\n}\r\n.xtmim-mim-part-design .xtmim-btn-secondary{\r\n  color:#fff;\r\n  border-color:rgba(255,255,255,.35);\r\n  background:rgba(255,255,255,.08);\r\n}\r\n.xtmim-mim-part-design .xtmim-hero .xtmim-btn-primary{\r\n  background:var(--xt-primary);\r\n  color:#fff;\r\n  border-color:var(--xt-primary);\r\n  box-shadow:0 8px 18px rgba(15,61,102,.16);\r\n}\r\n.xtmim-mim-part-design .xtmim-hero .xtmim-btn-secondary{\r\n  background:rgba(255,255,255,.72);\r\n  color:var(--xt-primary);\r\n  border-color:#b8cadb;\r\n}\r\n.xtmim-mim-part-design .xtmim-btn-light{\r\n  background:var(--xt-primary);\r\n  color:#fff;\r\n}\r\n.xtmim-mim-part-design .xtmim-btn-outline{\r\n  background:#fff;\r\n  color:var(--xt-primary);\r\n  border-color:var(--xt-border);\r\n}\r\n.xtmim-mim-part-design .xtmim-btn:hover{\r\n  text-decoration:none;\r\n  filter:brightness(.98);\r\n}\r\n.xtmim-mim-part-design .xtmim-section{\r\n  padding:34px 0;\r\n}\r\n.xtmim-mim-part-design .xtmim-section h2{\r\n  margin:0 0 16px;\r\n  color:var(--xt-primary-dark);\r\n  font-size:clamp(25px,3vw,36px);\r\n  line-height:1.18;\r\n  letter-spacing:-.02em;\r\n}\r\n.xtmim-mim-part-design .xtmim-section h3{\r\n  margin:26px 0 10px;\r\n  color:var(--xt-primary);\r\n  font-size:clamp(20px,2.2vw,26px);\r\n  line-height:1.25;\r\n}\r\n.xtmim-mim-part-design .xtmim-section p{\r\n  margin:0 0 16px;\r\n}\r\n.xtmim-mim-part-design .xtmim-lead{\r\n  color:#344054;\r\n  font-size:18px;\r\n  max-width:1040px;\r\n}\r\n.xtmim-mim-part-design .xtmim-toc{\r\n  background:var(--xt-bg-soft);\r\n  border:1px solid var(--xt-border);\r\n  border-radius:var(--xt-radius-lg);\r\n  padding:24px;\r\n  margin:28px 0;\r\n  box-shadow:var(--xt-shadow-sm);\r\n}\r\n.xtmim-mim-part-design .xtmim-toc h2{\r\n  margin:0 0 14px;\r\n  color:var(--xt-primary-dark);\r\n  font-size:24px;\r\n  line-height:1.25;\r\n}\r\n.xtmim-mim-part-design .xtmim-toc-list{\r\n  display:grid;\r\n  grid-template-columns:repeat(3,minmax(0,1fr));\r\n  gap:10px 16px;\r\n  margin:0;\r\n  padding:0;\r\n  list-style:none;\r\n}\r\n.xtmim-mim-part-design .xtmim-toc-list a{\r\n  display:block;\r\n  padding:10px 12px;\r\n  border-radius:999px;\r\n  background:#fff;\r\n  border:1px solid var(--xt-border);\r\n  color:var(--xt-primary-dark);\r\n  font-size:14px;\r\n  font-weight:800;\r\n}\r\n.xtmim-mim-part-design .xtmim-toc-list a:hover{\r\n  text-decoration:none;\r\n  background:var(--xt-primary-soft);\r\n}\r\n.xtmim-mim-part-design .xtmim-card{\r\n  background:#fff;\r\n  border:1px solid var(--xt-border);\r\n  border-radius:22px;\r\n  padding:24px;\r\n  box-shadow:var(--xt-shadow-md);\r\n}\r\n.xtmim-mim-part-design .xtmim-quick-answer{\r\n  display:grid;\r\n  grid-template-columns:repeat(3,minmax(0,1fr));\r\n  gap:16px;\r\n  margin:24px 0;\r\n}\r\n.xtmim-mim-part-design .xtmim-quick-answer-card{\r\n  border:1px solid var(--xt-border);\r\n  border-radius:20px;\r\n  padding:18px;\r\n  background:#fff;\r\n  box-shadow:var(--xt-shadow-sm);\r\n}\r\n.xtmim-mim-part-design .xtmim-quick-answer-card strong{\r\n  display:block;\r\n  color:var(--xt-primary-dark);\r\n  margin-bottom:6px;\r\n}\r\n.xtmim-mim-part-design .xtmim-quick-answer-card span{\r\n  display:block;\r\n  color:var(--xt-muted);\r\n  font-size:14px;\r\n}\r\n.xtmim-mim-part-design .xtmim-note{\r\n  background:var(--xt-primary-soft);\r\n  border-left:5px solid var(--xt-primary);\r\n  border-radius:var(--xt-radius-md);\r\n  padding:18px 20px;\r\n  margin:22px 0;\r\n}\r\n.xtmim-mim-part-design .xtmim-warning{\r\n  background:#fff7ed;\r\n  border-left:5px solid var(--xt-accent);\r\n  border-radius:var(--xt-radius-md);\r\n  padding:18px 20px;\r\n  margin:22px 0;\r\n}\r\n.xtmim-mim-part-design .xtmim-grid-2{\r\n  display:grid;\r\n  grid-template-columns:repeat(2,minmax(0,1fr));\r\n  gap:18px;\r\n}\r\n.xtmim-mim-part-design .xtmim-grid-3{\r\n  display:grid;\r\n  grid-template-columns:repeat(3,minmax(0,1fr));\r\n  gap:18px;\r\n}\r\n.xtmim-mim-part-design .xtmim-table-wrap{\r\n  width:100%;\r\n  max-width:100%;\r\n  overflow-x:auto;\r\n  margin:22px 0;\r\n  border:1px solid var(--xt-border);\r\n  border-radius:var(--xt-radius-md);\r\n  background:#fff;\r\n  box-shadow:var(--xt-shadow-sm);\r\n  -webkit-overflow-scrolling:touch;\r\n}\r\n.xtmim-mim-part-design table{\r\n  width:100%;\r\n  min-width:760px;\r\n  border-collapse:collapse;\r\n  font-size:15px;\r\n}\r\n.xtmim-mim-part-design th{\r\n  background:#f0f6fc;\r\n  color:var(--xt-primary-dark);\r\n  text-align:left;\r\n  font-weight:800;\r\n}\r\n.xtmim-mim-part-design th,\r\n.xtmim-mim-part-design td{\r\n  padding:14px 16px;\r\n  border-bottom:1px solid var(--xt-border);\r\n  vertical-align:top;\r\n}\r\n.xtmim-mim-part-design tr:last-child td{\r\n  border-bottom:none;\r\n}\r\n.xtmim-mim-part-design .xtmim-figure{\r\n  margin:28px 0;\r\n  background:#fff;\r\n  border:1px solid var(--xt-border);\r\n  border-radius:24px;\r\n  overflow:hidden;\r\n  box-shadow:var(--xt-shadow-md);\r\n}\r\n.xtmim-mim-part-design .xtmim-figure img{\r\n  display:block;\r\n  width:100%;\r\n  max-width:100%;\r\n  height:auto;\r\n}\r\n.xtmim-mim-part-design .xtmim-figure figcaption{\r\n  padding:14px 18px 0;\r\n  font-size:14px;\r\n  color:#475467;\r\n  font-weight:700;\r\n}\r\n.xtmim-mim-part-design .xtmim-figure-note{\r\n  padding:12px 18px 18px;\r\n  color:var(--xt-muted);\r\n  font-size:14px;\r\n}\r\n.xtmim-mim-part-design .xtmim-figure-note strong{\r\n  color:var(--xt-primary-dark);\r\n}\r\n.xtmim-mim-part-design .xtmim-figure-note p{\r\n  margin:4px 0 0;\r\n}\r\n.xtmim-mim-part-design .xtmim-scenario{\r\n  border:1px solid var(--xt-border);\r\n  border-radius:22px;\r\n  padding:24px;\r\n  background:linear-gradient(180deg,#fff,#f8fbfe);\r\n  margin:24px 0;\r\n}\r\n.xtmim-mim-part-design .xtmim-scenario h3{\r\n  margin-top:0;\r\n}\r\n.xtmim-mim-part-design .xtmim-list{\r\n  padding-left:20px;\r\n  margin:12px 0 0;\r\n}\r\n.xtmim-mim-part-design .xtmim-list li{\r\n  margin:8px 0;\r\n}\r\n.xtmim-mim-part-design .xtmim-related-card{\r\n  border:1px solid var(--xt-border);\r\n  border-radius:var(--xt-radius-md);\r\n  padding:18px;\r\n  background:#fff;\r\n}\r\n.xtmim-mim-part-design .xtmim-related-card h3{\r\n  margin:0 0 8px;\r\n  font-size:18px;\r\n}\r\n.xtmim-mim-part-design .xtmim-related-card p{\r\n  color:var(--xt-muted);\r\n  font-size:14px;\r\n  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.xtmim-quick-answer,\r\n  .xtmim-mim-part-design .xtmim-toc-list{\r\n    grid-template-columns:1fr;\r\n  }\r\n  .xtmim-mim-part-design .xtmim-hero{\r\n    padding:34px 22px;\r\n    border-radius:22px;\r\n  }\r\n  .xtmim-mim-part-design .xtmim-page-title{\r\n    font-size:32px;\r\n  }\r\n  .xtmim-mim-part-design .xtmim-hero p,\r\n  .xtmim-mim-part-design .xtmim-lead{\r\n    font-size:16px;\r\n  }\r\n  .xtmim-mim-part-design .xtmim-section{\r\n    padding:26px 0;\r\n  }\r\n  .xtmim-mim-part-design .xtmim-card,\r\n  .xtmim-mim-part-design .xtmim-cta,\r\n  .xtmim-mim-part-design .xtmim-toc{\r\n    padding:22px;\r\n  }\r\n}\r\n@media (max-width:600px){\r\n  .xtmim-mim-part-design .xtmim-container{\r\n    width:calc(100% - 28px);\r\n  }\r\n  .xtmim-mim-part-design .xtmim-page-title{\r\n    font-size:29px;\r\n  }\r\n  .xtmim-mim-part-design .xtmim-section h2{\r\n    font-size:26px;\r\n  }\r\n  .xtmim-mim-part-design .xtmim-section h3{\r\n    font-size:21px;\r\n  }\r\n  .xtmim-mim-part-design .xtmim-actions{\r\n    display:grid;\r\n    grid-template-columns:1fr;\r\n  }\r\n  .xtmim-mim-part-design .xtmim-btn{\r\n    width:100%;\r\n    text-align:center;\r\n  }\r\n  .xtmim-mim-part-design th,\r\n  .xtmim-mim-part-design td{\r\n    padding:12px 14px;\r\n  }\r\n  .xtmim-mim-part-design table{\r\n    min-width:720px;\r\n  }\r\n}\r\n<\/style>\r\n\r\n<article class=\"xtmim-mim-part-design\" itemscope itemtype=\"https:\/\/schema.org\/TechArticle\">\r\n  <div class=\"xtmim-container\">\r\n\r\n    <figure class=\"xtmim-figure\">\r\n      <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/xtmim.com\/wp-content\/uploads\/2026\/05\/01-mim-part-design-review-overview.webp\" alt=\"MIM part design review overview showing how geometry affects molding, debinding, sintering shrinkage, tolerance control, and inspection.\" title=\"01 MIM Part Design Review Overview\" width=\"1740\" height=\"904\" loading=\"eager\" fetchpriority=\"high\">\r\n      <figcaption>MIM part design review connects part geometry with molding, debinding, sintering shrinkage, tolerance planning, and inspection before tooling.<\/figcaption>\r\n      <div class=\"xtmim-figure-note\">\r\n        <strong>Core conclusion:<\/strong>\r\n        <p>A design that looks acceptable in CAD may still create risks during injection molding, green part handling, debinding, sintering, or final inspection.<\/p>\r\n      <\/div>\r\n    <\/figure>\r\n\r\n    <nav class=\"xtmim-toc\" aria-label=\"Page contents\">\r\n      <h2>Page Contents<\/h2>\r\n      <ul class=\"xtmim-toc-list\">\r\n        <li><a href=\"#quick-summary\">Quick Engineering Summary<\/a><\/li>\r\n        <li><a href=\"#what-mim-part-design-means\">What MIM Part Design Means<\/a><\/li>\r\n        <li><a href=\"#mim-part-candidate\">Good MIM Candidate<\/a><\/li>\r\n        <li><a href=\"#geometry-factors\">Geometry Factors<\/a><\/li>\r\n        <li><a href=\"#process-impact\">Process Impact<\/a><\/li>\r\n        <li><a href=\"#pre-tooling-risks\">Pre-Tooling Risks<\/a><\/li>\r\n        <li><a href=\"#pre-tooling-checklist\">Pre-Tooling Checklist<\/a><\/li>\r\n        <li><a href=\"#when-reconsider\">When to Reconsider MIM<\/a><\/li>\r\n        <li><a href=\"#review-matrix\">Review Matrix<\/a><\/li>\r\n        <li><a href=\"#inspection-strategy\">Inspection Strategy<\/a><\/li>\r\n        <li><a href=\"#drawing-information\">Drawing Information<\/a><\/li>\r\n        <li><a href=\"#related-design-topics\">Related Design Topics<\/a><\/li>\r\n        <li><a href=\"#standards\">Standards Note<\/a><\/li>\r\n        <li><a href=\"#faq\">FAQs<\/a><\/li>\r\n      <\/ul>\r\n    <\/nav>\r\n\r\n    <section class=\"xtmim-section\" id=\"quick-summary\">\r\n      <h2>Quick Engineering Summary for MIM Part Design<\/h2>\r\n      <p class=\"xtmim-lead\">\r\n        Before tooling, the key question is whether the part geometry can survive the full MIM process chain without creating avoidable molding, debinding, sintering, tolerance, or inspection problems. This page helps you decide whether the overall part geometry is suitable for MIM before moving into detailed wall thickness, mold, gate, tolerance, or full DFM review.\r\n      <\/p>\r\n      <div class=\"xtmim-quick-answer\">\r\n        <div class=\"xtmim-quick-answer-card\">\r\n          <strong>Use MIM when geometry adds value.<\/strong>\r\n          <span>Small, complex, multi-feature metal parts are usually stronger candidates than large simple shapes.<\/span>\r\n        <\/div>\r\n        <div class=\"xtmim-quick-answer-card\">\r\n          <strong>Review feature combinations, not isolated details.<\/strong>\r\n          <span>Wall transitions, holes, undercuts, ribs, bosses, and functional surfaces interact during shrinkage and inspection.<\/span>\r\n        <\/div>\r\n        <div class=\"xtmim-quick-answer-card\">\r\n          <strong>Separate critical dimensions early.<\/strong>\r\n          <span>Not every dimension should carry tight tolerance. Functional surfaces, datums, and machining zones need clear priority.<\/span>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <section class=\"xtmim-section\" id=\"what-mim-part-design-means\">\r\n      <h2>What MIM Part Design Really Means<\/h2>\r\n      <p class=\"xtmim-lead\">\r\n        MIM part design means reviewing a component as a full manufacturing system, not as an isolated 3D shape. In practice, the design must pass through several linked stages: feedstock injection, demolding, green part handling, debinding, sintering shrinkage, possible secondary machining, surface finishing, and final inspection.\r\n      <\/p>\r\n      <p>\r\n        A part may look suitable in CAD but still create production risk if it has abrupt wall transitions, unsupported thin features, hidden thick sections, unrealistic tolerances, or critical surfaces located where gates, ejector marks, parting lines, or support marks may appear.\r\n      <\/p>\r\n      <p>\r\n        From a design review perspective, the strongest MIM candidates are usually small, complex metal parts where geometry adds value. MIM can be useful when multiple machined, stamped, or assembled features can be consolidated into one molded metal component. The <a href=\"https:\/\/www.mimaweb.org\/DesignCenter\/DesigningwithMIM.aspx\" target=\"_blank\" rel=\"nofollow noopener\">Metal Injection Molding Association<\/a> explains that MIM provides plastic-injection-like design freedom while producing a metal component, which is why shape complexity, material performance, production quantity, and component cost should be considered together.\r\n      <\/p>\r\n\r\n      <div class=\"xtmim-table-wrap\">\r\n        <table>\r\n          <thead>\r\n            <tr>\r\n              <th>MIM Part Design Review Question<\/th>\r\n              <th>Why It Matters<\/th>\r\n            <\/tr>\r\n          <\/thead>\r\n          <tbody>\r\n            <tr>\r\n              <td>Is the part small and complex enough for MIM?<\/td>\r\n              <td>MIM value increases when complexity replaces machining or assembly.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Are wall sections reasonably balanced?<\/td>\r\n              <td>Unbalanced sections may increase shrinkage variation, void risk, or distortion.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Are holes, slots, and undercuts moldable?<\/td>\r\n              <td>These features affect core pins, slides, ejection, flash, and mold cost.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Are critical surfaces clearly marked?<\/td>\r\n              <td>Gate position, parting line, ejector marks, and support surfaces must be planned.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Can the part be supported during sintering?<\/td>\r\n              <td>Unsupported spans, thin frames, and flat areas may distort.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Are tolerances realistic for the process?<\/td>\r\n              <td>Critical dimensions may need secondary machining or a specific inspection plan.<\/td>\r\n            <\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n\r\n      <div class=\"xtmim-note\">\r\n        The real value of MIM part design review is early risk reduction. The best time to identify manufacturability issues is before mold construction, not after trial production.\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <section class=\"xtmim-section\" id=\"mim-part-candidate\">\r\n      <h2>When a Part Is a Good Candidate for MIM<\/h2>\r\n      <p>\r\n        A part is usually a good candidate for MIM when complexity, production volume, material performance, and dimensional requirements align. MIM is not automatically the best option for every metal part. It is most effective when the geometry would be costly to machine, difficult to stamp, hard to cast cleanly, or inefficient to assemble from multiple small parts.\r\n      <\/p>\r\n      <p>\r\n        Good MIM candidates often include small metal components with thin walls, cross holes, slots, bosses, ribs, undercuts, splines, irregular contours, micro features, or integrated functional details. Complex features can strengthen the rationale for MIM when the business and material conditions also fit.\r\n      <\/p>\r\n\r\n      <figure class=\"xtmim-figure\">\r\n        <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/xtmim.com\/wp-content\/uploads\/2026\/05\/02-mim-part-suitability-matrix.webp\" alt=\"MIM part suitability matrix comparing good, conditional, and poor candidates for metal injection molding part design.\" title=\"02 MIM Part Suitability Matrix\" width=\"1672\" height=\"941\" loading=\"lazy\">\r\n        <figcaption>A MIM part is a stronger candidate when complexity, small size, repeat production, and material requirements justify tooling and process review.<\/figcaption>\r\n        <div class=\"xtmim-figure-note\">\r\n          <strong>Core conclusion:<\/strong>\r\n          <p>MIM is most suitable for small, complex, multi-feature metal parts where molded geometry can reduce machining, assembly, or secondary operations.<\/p>\r\n        <\/div>\r\n      <\/figure>\r\n\r\n      <div class=\"xtmim-table-wrap\">\r\n        <table>\r\n          <thead>\r\n            <tr>\r\n              <th>Part Condition<\/th>\r\n              <th>MIM Suitability<\/th>\r\n              <th>Design Review Note<\/th>\r\n            <\/tr>\r\n          <\/thead>\r\n          <tbody>\r\n            <tr>\r\n              <td>Small, complex, multi-feature metal part<\/td>\r\n              <td>High<\/td>\r\n              <td>Strong candidate for MIM feasibility review.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Simple block, plate, or straight shaft<\/td>\r\n              <td>Low<\/td>\r\n              <td>CNC, stamping, casting, or PM may be more economical.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Multiple holes, slots, or undercuts<\/td>\r\n              <td>Medium to High<\/td>\r\n              <td>Tooling direction, core pins, slides, and flash risk must be reviewed.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Large thick solid section<\/td>\r\n              <td>Low to Medium<\/td>\r\n              <td>Debinding time, sintering shrinkage, and distortion risks increase.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Critical functional surfaces<\/td>\r\n              <td>Medium to High<\/td>\r\n              <td>Gates, parting lines, ejector marks, and inspection datums must be planned early.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Tight tolerance required on every dimension<\/td>\r\n              <td>Medium to Low<\/td>\r\n              <td>Critical dimensions should be separated from general dimensions.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Medium to high repeat production<\/td>\r\n              <td>High<\/td>\r\n              <td>Tooling investment is easier to justify when production volume is sufficient.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Low-volume development part with unstable design<\/td>\r\n              <td>Low to Medium<\/td>\r\n              <td>CNC or prototype routes may be better before committing to MIM tooling.<\/td>\r\n            <\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n\r\n      <p>\r\n        A common mistake is treating MIM as a direct replacement for CNC machining without changing the design. A machined part often has features created by cutting tools, whereas a MIM part must be shaped by injection molding and then controlled through sintering shrinkage. If cost is the main driver, review <a href=\"https:\/\/xtmim.com\/mim-design-guide\/design-for-cost\/\">MIM design for cost<\/a> before locking the drawing.\r\n      <\/p>\r\n    <\/section>\r\n\r\n    <section class=\"xtmim-section\" id=\"geometry-factors\">\r\n      <h2>Key Geometry Factors in MIM Part Design<\/h2>\r\n      <p class=\"xtmim-lead\">\r\n        The strongest part design reviews look at geometry as an interacting system. Wall balance, holes, slots, undercuts, ribs, bosses, functional surfaces, datum areas, and support areas should be reviewed together before tooling.\r\n      <\/p>\r\n\r\n      <figure class=\"xtmim-figure\">\r\n        <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/xtmim.com\/wp-content\/uploads\/2026\/05\/03-geometry-risk-map-for-mim-parts.webp\" alt=\"Geometry risk map for MIM parts showing wall balance, holes, slots, undercuts, ribs, bosses, functional surfaces, datum areas, and sintering support surfaces.\" title=\"03 Geometry Risk Map for MIM Parts\" width=\"1672\" height=\"941\" loading=\"lazy\">\r\n        <figcaption>MIM part design risk often comes from feature combinations: wall transitions, holes, slots, undercuts, thin ribs, bosses, critical surfaces, and unsupported geometry.<\/figcaption>\r\n        <div class=\"xtmim-figure-note\">\r\n          <strong>Core conclusion:<\/strong>\r\n          <p>The most important MIM part design risks are not isolated features, but how multiple features interact through molding, debinding, sintering shrinkage, and inspection.<\/p>\r\n        <\/div>\r\n      <\/figure>\r\n\r\n      <h3>Overall Part Size, Mass, and Complexity<\/h3>\r\n      <p>\r\n        The first review point is the relationship between part size, mass, and complexity. MIM is strongest when a component is small enough to be molded and sintered efficiently, but complex enough to justify tooling and process development.\r\n      <\/p>\r\n      <p>\r\n        A large simple part may not be a good MIM candidate because it does not use the main advantage of the process. A very thick part may create debinding and sintering challenges because binder removal and shrinkage behavior become harder to control. A very thin or long unsupported part may be difficult to handle as a green part and may distort during sintering.\r\n      <\/p>\r\n      <p>\r\n        In production, the practical size limit depends on material, feedstock, tool design, debinding route, sintering support, tolerance expectations, and the supplier\u2019s process capability. Fixed \u201cmaximum part size\u201d claims should not be used as universal design rules.\r\n      <\/p>\r\n\r\n      <h3>Wall Balance and Section Transitions<\/h3>\r\n      <p>\r\n        Wall balance is one of the first geometry checks in MIM part design. Uneven wall sections can affect feedstock flow during injection molding, binder removal during debinding, and shrinkage consistency during sintering. Thick areas may shrink differently from thin areas, especially when they connect abruptly.\r\n      <\/p>\r\n      <p>\r\n        A design engineer should look for sudden thick-to-thin transitions, heavy bosses, isolated thick pads, and thick sections hidden inside cosmetic shapes. The goal is not always to make every area identical. The goal is to avoid unnecessary mass concentration and to create smoother transitions where the function allows it.\r\n      <\/p>\r\n      <p>\r\n        For deeper rules on thickness distribution, thick-section risk, coring strategy, and transitions, see the dedicated page on <a href=\"https:\/\/xtmim.com\/mim-design-guide\/wall-thickness\/\">MIM wall thickness design<\/a>.\r\n      <\/p>\r\n\r\n      <h3>Holes, Slots, and Undercuts<\/h3>\r\n      <p>\r\n        Holes, slots, and undercuts can be valuable in MIM because they allow functional geometry to be molded into the part. They can reduce machining, drilling, or assembly operations. However, these features also introduce tooling and inspection risk.\r\n      <\/p>\r\n      <p>\r\n        The review should consider feature direction, depth, opening access, core pin strength, slide requirements, possible flash locations, and whether the feature can be measured after sintering. A cross hole that looks simple on the drawing may require additional mold action. A blind slot may create filling, venting, or inspection limitations.\r\n      <\/p>\r\n      <p>\r\n        For detailed moldability review, continue to <a href=\"https:\/\/xtmim.com\/mim-design-guide\/holes-slots-undercuts\/\">holes, slots and undercuts in MIM<\/a>.\r\n      <\/p>\r\n\r\n      <h3>Ribs, Bosses, Thin Features, and Local Details<\/h3>\r\n      <p>\r\n        Ribs, bosses, thin walls, logos, markings, and local functional details can improve the value of MIM by integrating multiple features into one metal part. They can also create localized risk.\r\n      <\/p>\r\n      <p>\r\n        A tall thin rib may fill poorly or deform after ejection. A large boss may create a thick mass that shrinks differently from the surrounding wall. A sharp logo or marking may be difficult to mold cleanly if placed on a functional or cosmetic surface. Local details should be reviewed not only for shape, but also for mold release, filling, green part strength, and sintering stability.\r\n      <\/p>\r\n\r\n      <h3>Functional Surfaces, Critical Dimensions, and Datum Areas<\/h3>\r\n      <p>\r\n        MIM part design should clearly identify functional surfaces before tooling. These may include sealing faces, bearing seats, sliding surfaces, rotational features, electrical contact areas, magnetic surfaces, locking features, or cosmetic zones.\r\n      <\/p>\r\n      <p>\r\n        A supplier should not have to guess which surfaces are critical. If a functional area is not marked, the gate, parting line, ejector mark, or sintering support mark may be placed in a location that creates assembly or inspection problems later.\r\n      <\/p>\r\n      <p>\r\n        Critical surfaces should be reviewed together with <a href=\"https:\/\/xtmim.com\/mim-design-guide\/gate-design\/\">MIM gate design<\/a> and <a href=\"https:\/\/xtmim.com\/mim-design-guide\/mim-tolerances\/\">MIM tolerances<\/a>. Specifying tight tolerances everywhere often increases cost and rejection risk without improving function.\r\n      <\/p>\r\n    <\/section>\r\n\r\n    <section class=\"xtmim-section\" id=\"process-impact\">\r\n      <h2>How Part Design Affects Molding, Debinding, and Sintering<\/h2>\r\n      <p class=\"xtmim-lead\">\r\n        MIM part design affects every process stage. A feature that looks minor in CAD may create issues during filling, ejection, binder removal, sintering shrinkage, or inspection.\r\n      <\/p>\r\n      <p>\r\n        MIM uses fine metal powder mixed with binder to form feedstock. The feedstock is injection molded into a green part, debound to remove binder, and sintered into a dense metal component. Material specifications such as <a href=\"https:\/\/www.astm.org\/Standards\/B883.htm\" target=\"_blank\" rel=\"nofollow noopener\">ASTM B883<\/a> are relevant to ferrous MIM materials, but material standards should not be treated as universal geometry rules for every MIM part design.\r\n      <\/p>\r\n\r\n      <figure class=\"xtmim-figure\">\r\n        <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/xtmim.com\/wp-content\/uploads\/2026\/05\/04-part-design-impact-mim-process-stages.webp\" alt=\"MIM part design impact diagram showing how geometry affects injection molding, green part handling, debinding, sintering shrinkage, and final inspection.\" title=\"04 Part Design Impact Across MIM Process Stages\" width=\"1672\" height=\"941\" loading=\"lazy\">\r\n        <figcaption>A design feature that looks minor in CAD can create different risks during molding, green handling, debinding, sintering, and final inspection.<\/figcaption>\r\n        <div class=\"xtmim-figure-note\">\r\n          <strong>Core conclusion:<\/strong>\r\n          <p>MIM design issues rarely stay in one process step; the same geometry problem can become a molding defect, debinding risk, sintering distortion, or inspection disagreement.<\/p>\r\n        <\/div>\r\n      <\/figure>\r\n\r\n      <div class=\"xtmim-table-wrap\">\r\n        <table>\r\n          <thead>\r\n            <tr>\r\n              <th>Part Design Factor<\/th>\r\n              <th>Injection Molding Impact<\/th>\r\n              <th>Debinding \/ Sintering Impact<\/th>\r\n              <th>Review Action<\/th>\r\n            <\/tr>\r\n          <\/thead>\r\n          <tbody>\r\n            <tr>\r\n              <td>Uneven wall thickness<\/td>\r\n              <td>Flow imbalance, weld line, short shot risk<\/td>\r\n              <td>Non-uniform shrinkage or distortion<\/td>\r\n              <td>Review wall transitions and mass distribution.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Deep blind hole<\/td>\r\n              <td>Core pin, venting, and demolding concern<\/td>\r\n              <td>Cleaning and inspection difficulty<\/td>\r\n              <td>Check feature direction and access.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Long unsupported span<\/td>\r\n              <td>Ejection and green part handling risk<\/td>\r\n              <td>Warpage or sagging risk<\/td>\r\n              <td>Review sintering support surfaces.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Sharp internal corner<\/td>\r\n              <td>Stress concentration and flow hesitation<\/td>\r\n              <td>Crack initiation or distortion risk<\/td>\r\n              <td>Add radius where the function allows it.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Critical cosmetic surface<\/td>\r\n              <td>Gate, parting line, or ejector mark concern<\/td>\r\n              <td>Surface acceptance issue after finishing<\/td>\r\n              <td>Mark cosmetic and functional zones clearly.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Tight tolerance stack-up<\/td>\r\n              <td>Mold correction and inspection challenge<\/td>\r\n              <td>Post-sintering variation may exceed function<\/td>\r\n              <td>Separate critical dimensions from general tolerances.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Thick local boss<\/td>\r\n              <td>Filling and cooling imbalance<\/td>\r\n              <td>Slow debinding and local shrinkage difference<\/td>\r\n              <td>Consider coring or geometry adjustment.<\/td>\r\n            <\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n\r\n      <p>\r\n        For deeper background on process-related quality risk, see <a href=\"https:\/\/xtmim.com\/blogs\/how-injection-molding-affects-part-quality-in-mim\/\">how injection molding affects MIM part quality<\/a> and <a href=\"https:\/\/xtmim.com\/blogs\/debinding-and-sintering-affect-part-quality-in-mim\/\">debinding and sintering quality risks<\/a>.\r\n      <\/p>\r\n    <\/section>\r\n\r\n    <section class=\"xtmim-section\" id=\"pre-tooling-risks\">\r\n      <h2>MIM Part Design Risks to Check Before Tooling<\/h2>\r\n      <p>\r\n        Tooling is one of the most important commitment points in a MIM project. Before mold construction, the drawing should be reviewed for geometry risks that may affect molding stability, sintering distortion, secondary operations, and inspection agreement.\r\n      <\/p>\r\n\r\n      <div class=\"xtmim-table-wrap\">\r\n        <table>\r\n          <thead>\r\n            <tr>\r\n              <th>Risk Area<\/th>\r\n              <th>What to Check<\/th>\r\n              <th>Why It Matters<\/th>\r\n            <\/tr>\r\n          <\/thead>\r\n          <tbody>\r\n            <tr>\r\n              <td>Wall transition<\/td>\r\n              <td>Sudden thick-to-thin changes<\/td>\r\n              <td>May cause shrinkage imbalance, void risk, or local distortion.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Unsupported geometry<\/td>\r\n              <td>Long arms, thin frames, flat plates, cantilever features<\/td>\r\n              <td>May distort during green handling or sintering.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Side features<\/td>\r\n              <td>Cross holes, side slots, internal undercuts<\/td>\r\n              <td>May require slides, core pins, or complex mold actions.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Functional surfaces<\/td>\r\n              <td>Sealing, bearing, sliding, contact, and cosmetic areas<\/td>\r\n              <td>Gate, parting line, and support locations must be planned.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Critical dimensions<\/td>\r\n              <td>Which dimensions truly control function<\/td>\r\n              <td>Avoid unnecessary tight tolerance on non-critical areas.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Post-machining areas<\/td>\r\n              <td>Threads, bearing seats, sealing faces, datum faces<\/td>\r\n              <td>Secondary operations should be planned before tooling.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Datum and inspection<\/td>\r\n              <td>Measurement access and functional datum strategy<\/td>\r\n              <td>Prevent inspection disagreement after trial production.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Surface finishing zones<\/td>\r\n              <td>Polishing, coating, passivation, heat treatment, or cosmetic requirements<\/td>\r\n              <td>Surface treatment may change appearance or dimensions.<\/td>\r\n            <\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n\r\n      <p>\r\n        For a deeper list of avoidable issues, continue to <a href=\"https:\/\/xtmim.com\/mim-design-guide\/design-mistakes\/\">common MIM design mistakes<\/a>.\r\n      <\/p>\r\n\r\n      <div class=\"xtmim-scenario\">\r\n        <h3>Composite Field Scenario for Engineering Training: Thin Frame Distortion After Sintering<\/h3>\r\n        <p><strong>What problem occurred:<\/strong> A thin frame-like MIM part showed distortion after sintering. The CAD model appeared symmetrical, but the flatness-sensitive area could not remain stable through production trials.<\/p>\r\n        <p><strong>Why it happened:<\/strong> The part had long unsupported spans and uneven local mass near mounting features. During sintering shrinkage, different sections moved differently because the part did not have a stable support strategy.<\/p>\r\n        <p><strong>What the real system cause was:<\/strong> The issue was not only the sintering process. The design did not identify flatness-sensitive areas early, and the tooling and sintering support plan were not reviewed together before mold construction.<\/p>\r\n        <p><strong>How it was corrected:<\/strong> The design was reviewed for support surfaces, wall transitions, and functional datums. Non-critical geometry was adjusted to improve stiffness, and the support strategy was planned around the functional flatness area.<\/p>\r\n        <p><strong>How to prevent recurrence:<\/strong> Long spans, thin frames, and flatness-critical surfaces should be reviewed before tooling. Sintering support requirements should be considered as part of part design, not treated as a late production adjustment.<\/p>\r\n        <p>For more detail, review <a href=\"https:\/\/xtmim.com\/mim-design-guide\/sintering-supports\/\">sintering support for MIM parts<\/a>.<\/p>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <section class=\"xtmim-section\" id=\"pre-tooling-checklist\">\r\n      <h2>Pre-Tooling MIM Part Design Checklist<\/h2>\r\n      <p class=\"xtmim-lead\">\r\n        Before mold construction, the design team should confirm that the part geometry, functional surfaces, tolerance plan, inspection method, and expected production route are aligned. This checklist is intended for early engineering screening, not as a replacement for drawing-based DFM review.\r\n      <\/p>\r\n\r\n      <div class=\"xtmim-grid-2\">\r\n        <div class=\"xtmim-check-card\">\r\n          <strong>1. Confirm MIM suitability<\/strong>\r\n          <p>Check whether the part is small, complex, and repeat-produced enough to justify MIM tooling and process development.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-check-card\">\r\n          <strong>2. Review wall balance<\/strong>\r\n          <p>Identify thick sections, sudden transitions, heavy bosses, and areas that may cause shrinkage imbalance or distortion.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-check-card\">\r\n          <strong>3. Mark critical surfaces<\/strong>\r\n          <p>Separate sealing faces, bearing seats, sliding surfaces, cosmetic zones, electrical contacts, or assembly-control areas.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-check-card\">\r\n          <strong>4. Check holes, slots, and undercuts<\/strong>\r\n          <p>Review feature direction, core pin strength, slide requirements, flash risk, demolding, and inspection access.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-check-card\">\r\n          <strong>5. Plan gate-sensitive areas<\/strong>\r\n          <p>Avoid placing gates, parting lines, ejector marks, or support marks on functional or high-visibility surfaces.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-check-card\">\r\n          <strong>6. Review sintering support<\/strong>\r\n          <p>Check long spans, thin frames, flatness-sensitive surfaces, cantilever areas, and possible setter contact zones.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-check-card\">\r\n          <strong>7. Separate tolerance levels<\/strong>\r\n          <p>Classify critical dimensions, general dimensions, post-machining dimensions, and reference dimensions before quoting.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-check-card\">\r\n          <strong>8. Define inspection method<\/strong>\r\n          <p>Clarify datums, CMM needs, gauges, thread checks, visual criteria, surface finish requirements, and acceptance priorities.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"xtmim-note\">\r\n        If several checklist items are uncertain, request DFM review before tooling. Early design adjustment is usually less costly than mold rework after trial production.\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <section class=\"xtmim-section\" id=\"when-reconsider\">\r\n      <h2>When MIM Part Design Should Be Reconsidered<\/h2>\r\n      <p>\r\n        Not every metal component should be converted to MIM. A responsible MIM design review should also identify cases where CNC machining, stamping, die casting, casting, forging, or pressed powder metallurgy may be more suitable.\r\n      <\/p>\r\n      <p>\r\n        The part design should be reconsidered when the geometry does not use the strengths of MIM, when tooling cannot be justified, or when the tolerance and functional requirements would force excessive secondary machining.\r\n      <\/p>\r\n\r\n      <div class=\"xtmim-table-wrap\">\r\n        <table>\r\n          <thead>\r\n            <tr>\r\n              <th>Requirement<\/th>\r\n              <th>Concern<\/th>\r\n              <th>Possible Direction<\/th>\r\n            <\/tr>\r\n          <\/thead>\r\n          <tbody>\r\n            <tr>\r\n              <td>Very simple geometry<\/td>\r\n              <td>MIM tooling may not be justified<\/td>\r\n              <td>CNC machining, stamping, PM, or casting may be reviewed.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Very low annual volume<\/td>\r\n              <td>Tooling and development cost may be hard to amortize<\/td>\r\n              <td>CNC or prototype routes may be more practical.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Large solid section<\/td>\r\n              <td>Debinding and sintering risks may increase<\/td>\r\n              <td>Casting, forging, or machining may be more suitable.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Tight tolerance on most surfaces<\/td>\r\n              <td>Secondary machining may dominate cost<\/td>\r\n              <td>Use CNC or a hybrid MIM + machining strategy only where justified.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Large flat thin plate<\/td>\r\n              <td>Sintering distortion risk may be high<\/td>\r\n              <td>Stamping or machining may provide better stability.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Critical surface cannot accept gate, parting line, or support marks<\/td>\r\n              <td>Tooling and finishing complexity increases<\/td>\r\n              <td>Rework the surface plan or consider another process.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Material requirement is not defined<\/td>\r\n              <td>Performance cannot be validated early<\/td>\r\n              <td>Confirm material specification before DFM.<\/td>\r\n            <\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n\r\n      <div class=\"xtmim-warning\">\r\n        A common mistake is asking a MIM supplier to quote a part before the functional dimensions, material requirement, surface condition, and annual volume are known. Without these inputs, the quote may not reflect the real manufacturing route.\r\n      <\/div>\r\n\r\n      <div class=\"xtmim-scenario\">\r\n        <h3>Composite Field Scenario for Engineering Training: CNC Part Converted to MIM Without Tolerance Separation<\/h3>\r\n        <p><strong>What problem occurred:<\/strong> A CNC-machined component was redesigned for MIM, but the drawing kept tight machining-style tolerances on nearly every dimension.<\/p>\r\n        <p><strong>Why it happened:<\/strong> The original drawing was created for subtractive machining. It did not distinguish functional dimensions from non-critical geometry.<\/p>\r\n        <p><strong>What the real system cause was:<\/strong> The issue was not only tolerance capability. The project lacked a tolerance strategy. Critical surfaces, datums, secondary machining areas, and inspection methods were not separated before tooling review.<\/p>\r\n        <p><strong>How it was corrected:<\/strong> The drawing was updated to classify critical dimensions, general dimensions, post-machining areas, and inspection datums. Only function-critical features were kept under tighter control.<\/p>\r\n        <p><strong>How to prevent recurrence:<\/strong> Before converting CNC to MIM, the design team should review which dimensions affect function, which surfaces can remain as-sintered, and which features may require secondary machining or sizing.<\/p>\r\n        <p>For related dimensional planning, see <a href=\"https:\/\/xtmim.com\/mim-design-guide\/shrinkage-compensation\/\">MIM shrinkage compensation<\/a> and <a href=\"https:\/\/xtmim.com\/mim-design-guide\/mim-tolerances\/\">MIM tolerances<\/a>.<\/p>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <section class=\"xtmim-section\" id=\"review-matrix\">\r\n      <h2>MIM Part Design Review Matrix<\/h2>\r\n      <p>\r\n        The following matrix helps design engineers decide which part features need deeper review and which related MIM design guide page should be used for the next step.\r\n      <\/p>\r\n\r\n      <div class=\"xtmim-table-wrap\">\r\n        <table>\r\n          <thead>\r\n            <tr>\r\n              <th>Design Feature<\/th>\r\n              <th>Review Priority<\/th>\r\n              <th>Main Risk<\/th>\r\n              <th>Related Guide Page<\/th>\r\n            <\/tr>\r\n          <\/thead>\r\n          <tbody>\r\n            <tr>\r\n              <td>Overall part geometry<\/td>\r\n              <td>High<\/td>\r\n              <td>Wrong process selection or poor MIM fit<\/td>\r\n              <td>Current page<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Wall thickness<\/td>\r\n              <td>High<\/td>\r\n              <td>Shrinkage imbalance, voids, distortion<\/td>\r\n              <td><a href=\"https:\/\/xtmim.com\/mim-design-guide\/wall-thickness\/\">Wall Thickness Design<\/a><\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Holes and slots<\/td>\r\n              <td>High<\/td>\r\n              <td>Tooling, flash, demolding, inspection risk<\/td>\r\n              <td><a href=\"https:\/\/xtmim.com\/mim-design-guide\/holes-slots-undercuts\/\">Holes, Slots and Undercuts<\/a><\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Undercuts<\/td>\r\n              <td>High<\/td>\r\n              <td>Slides, mold cost, ejection risk<\/td>\r\n              <td><a href=\"https:\/\/xtmim.com\/mim-design-guide\/holes-slots-undercuts\/\">Holes, Slots and Undercuts<\/a><\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Gate-sensitive areas<\/td>\r\n              <td>Medium to High<\/td>\r\n              <td>Gate mark, flow imbalance, cosmetic issue<\/td>\r\n              <td><a href=\"https:\/\/xtmim.com\/mim-design-guide\/gate-design\/\">Gate Design<\/a><\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Long unsupported features<\/td>\r\n              <td>High<\/td>\r\n              <td>Sintering distortion<\/td>\r\n              <td><a href=\"https:\/\/xtmim.com\/mim-design-guide\/sintering-supports\/\">Sintering Support<\/a><\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Critical dimensions<\/td>\r\n              <td>High<\/td>\r\n              <td>Tolerance, datum, and inspection risk<\/td>\r\n              <td><a href=\"https:\/\/xtmim.com\/mim-design-guide\/mim-tolerances\/\">MIM Tolerances<\/a><\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Shrinkage-sensitive geometry<\/td>\r\n              <td>High<\/td>\r\n              <td>Mold compensation and dimensional variation<\/td>\r\n              <td><a href=\"https:\/\/xtmim.com\/mim-design-guide\/shrinkage-compensation\/\">Shrinkage Compensation<\/a><\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Tight cost target<\/td>\r\n              <td>Medium<\/td>\r\n              <td>Over-complex tooling or excessive machining<\/td>\r\n              <td><a href=\"https:\/\/xtmim.com\/mim-design-guide\/design-for-cost\/\">Design for Cost<\/a><\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Full project review<\/td>\r\n              <td>High<\/td>\r\n              <td>Missed manufacturability risk<\/td>\r\n              <td><a href=\"https:\/\/xtmim.com\/mim-design-guide\/dfm\/\">DFM for MIM<\/a><\/td>\r\n            <\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n\r\n      <div class=\"xtmim-note\">\r\n        This matrix is a screening tool, not a substitute for supplier review. Final decisions should be confirmed through drawing-based DFM review.\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <section class=\"xtmim-section\" id=\"inspection-strategy\">\r\n      <h2>Critical Dimensions, Datums, and Inspection Strategy<\/h2>\r\n      <p class=\"xtmim-lead\">\r\n        A MIM part design review should not treat every dimension as equally critical. Before tooling, the drawing should separate functional dimensions, general dimensions, reference dimensions, post-machining areas, and inspection datums so the supplier can plan mold compensation, sintering control, secondary operations, and final acceptance.\r\n      <\/p>\r\n\r\n      <div class=\"xtmim-table-wrap\">\r\n        <table>\r\n          <thead>\r\n            <tr>\r\n              <th>Drawing \/ Inspection Item<\/th>\r\n              <th>What to Define<\/th>\r\n              <th>Why It Matters for MIM<\/th>\r\n            <\/tr>\r\n          <\/thead>\r\n          <tbody>\r\n            <tr>\r\n              <td>Functional dimensions<\/td>\r\n              <td>Fits, positions, sealing faces, bearing seats, locking features, assembly-control areas<\/td>\r\n              <td>These dimensions may need tighter process control, secondary machining, sizing, or a dedicated inspection method.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>General dimensions<\/td>\r\n              <td>Non-critical external shapes, support features, non-functional contours<\/td>\r\n              <td>Over-tightening non-critical dimensions increases cost and rejection risk without improving function.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Datums<\/td>\r\n              <td>Primary, secondary, and tertiary references used for measurement and assembly<\/td>\r\n              <td>Unclear datums can create inspection disagreement after sintering or secondary machining.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Post-machining zones<\/td>\r\n              <td>Threads, precision holes, bearing surfaces, sealing surfaces, flat datum faces<\/td>\r\n              <td>These zones should be planned before mold construction so enough stock and access are available.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Inspection method<\/td>\r\n              <td>CMM, gauges, thread gauges, pin gauges, visual criteria, surface finish checks<\/td>\r\n              <td>The inspection method should match the functional requirement and realistic production control route.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Cosmetic and contact surfaces<\/td>\r\n              <td>Areas that cannot accept gate marks, ejector marks, parting lines, support marks, or polishing variation<\/td>\r\n              <td>These areas affect gate planning, mold layout, support strategy, and surface finishing decisions.<\/td>\r\n            <\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n\r\n      <div class=\"xtmim-warning\">\r\n        Do not apply tight tolerance to every dimension by default. For MIM projects, the more practical approach is to mark function-critical dimensions clearly and allow general geometry to follow realistic process capability unless the application requires tighter control.\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <section class=\"xtmim-section\" id=\"drawing-information\">\r\n      <h2>Drawing Information Needed for MIM Part Design Review<\/h2>\r\n      <p>\r\n        A MIM part design review is most useful when the supplier receives enough technical information to understand the function, risks, and production target. A 3D model alone is not enough. A 2D drawing without functional notes may also be incomplete.\r\n      <\/p>\r\n\r\n      <div class=\"xtmim-table-wrap\">\r\n        <table>\r\n          <thead>\r\n            <tr>\r\n              <th>Information Needed<\/th>\r\n              <th>Why It Helps<\/th>\r\n            <\/tr>\r\n          <\/thead>\r\n          <tbody>\r\n            <tr>\r\n              <td>2D drawing with tolerances<\/td>\r\n              <td>Identifies critical and non-critical dimensions.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>3D CAD file<\/td>\r\n              <td>Helps review geometry, wall sections, feature direction, and moldability.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Material requirement<\/td>\r\n              <td>Affects feedstock selection, sintering route, strength, corrosion resistance, wear, or magnetic behavior.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Estimated annual volume<\/td>\r\n              <td>Helps judge tooling feasibility and production strategy.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Functional surfaces<\/td>\r\n              <td>Helps protect critical areas from gates, parting lines, ejector marks, and support marks.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Assembly requirements<\/td>\r\n              <td>Helps define datums, fits, and inspection priorities.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Surface finish or post-treatment needs<\/td>\r\n              <td>Helps plan secondary operations, polishing, coating, passivation, or heat treatment.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Current manufacturing method<\/td>\r\n              <td>Helps evaluate whether MIM can reduce machining, assembly, or cost.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Known failure or cost issue<\/td>\r\n              <td>Helps focus DFM review on the real project problem.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Inspection requirements<\/td>\r\n              <td>Helps align supplier capability with acceptance criteria.<\/td>\r\n            <\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n\r\n      <p>\r\n        If your part has thin walls, complex holes, undercuts, critical cosmetic surfaces, tight assembly dimensions, or high machining cost, it should be reviewed before mold construction.\r\n      <\/p>\r\n    <\/section>\r\n\r\n    <section class=\"xtmim-cta\" id=\"project-review\">\r\n      <h2>Send Your Drawing for MIM Part Design Review<\/h2>\r\n      <p>\r\n        If your part includes thin walls, holes, slots, undercuts, complex functional surfaces, tight assembly dimensions, or high CNC machining cost, submit the drawing before tooling. A drawing-based review can help confirm whether the part geometry is suitable for MIM and what should be adjusted before mold investment.\r\n      <\/p>\r\n      <p>Please provide:<\/p>\r\n      <ul class=\"xtmim-list\">\r\n        <li>2D drawing with tolerances;<\/li>\r\n        <li>3D CAD file;<\/li>\r\n        <li>material requirement;<\/li>\r\n        <li>estimated annual volume;<\/li>\r\n        <li>critical dimensions, datums, and functional surfaces;<\/li>\r\n        <li>surface finish or post-treatment requirements;<\/li>\r\n        <li>assembly or application background;<\/li>\r\n        <li>current process problem if replacing CNC, casting, stamping, or assembly.<\/li>\r\n      <\/ul>\r\n      <p>\r\n        The engineering review can help evaluate process suitability, wall balance, moldability, gate-sensitive areas, sintering support, shrinkage risk, tolerance strategy, secondary operations, inspection planning, and production feasibility before mold investment.\r\n      <\/p>\r\n      <div class=\"xtmim-actions\">\r\n        <a class=\"xtmim-btn xtmim-btn-primary\" href=\"https:\/\/xtmim.com\/submit-drawing-for-review\/\">Submit Drawing for Review<\/a>\r\n        <a class=\"xtmim-btn xtmim-btn-secondary\" href=\"https:\/\/xtmim.com\/contact-us\/\">Contact XTMIM Engineering Team<\/a>\r\n        <a class=\"xtmim-btn xtmim-btn-secondary\" href=\"https:\/\/xtmim.com\/request-a-quote\/\">Request a Quote<\/a>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <section class=\"xtmim-section\" id=\"related-design-topics\">\r\n      <h2>Related MIM Design Guide Topics<\/h2>\r\n      <p>\r\n        MIM part design is closely connected with other design review topics. For deeper review of specific design factors, use the related MIM Design Guide pages below.\r\n      <\/p>\r\n\r\n      <div class=\"xtmim-grid-3\">\r\n        <div class=\"xtmim-related-card\">\r\n          <h3><a href=\"https:\/\/xtmim.com\/mim-design-guide\/wall-thickness\/\">MIM Wall Thickness Design<\/a><\/h3>\r\n          <p>Review wall balance, thick sections, transitions, and shrinkage-related risk.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-related-card\">\r\n          <h3><a href=\"https:\/\/xtmim.com\/mim-design-guide\/holes-slots-undercuts\/\">Holes, Slots and Undercuts<\/a><\/h3>\r\n          <p>Review core pins, slides, demolding, flash, and feature inspection risks.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-related-card\">\r\n          <h3><a href=\"https:\/\/xtmim.com\/mim-design-guide\/mold-design\/\">MIM Mold Design<\/a><\/h3>\r\n          <p>Understand how geometry affects parting lines, slides, inserts, and ejection.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-related-card\">\r\n          <h3><a href=\"https:\/\/xtmim.com\/mim-design-guide\/gate-design\/\">MIM Gate Design<\/a><\/h3>\r\n          <p>Plan gate-sensitive surfaces, flow path, gate vestige, and cosmetic zones.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-related-card\">\r\n          <h3><a href=\"https:\/\/xtmim.com\/mim-design-guide\/sintering-supports\/\">Sintering Support<\/a><\/h3>\r\n          <p>Review support surfaces, long spans, thin frames, flatness, and distortion risk.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-related-card\">\r\n          <h3><a href=\"https:\/\/xtmim.com\/mim-design-guide\/shrinkage-compensation\/\">Shrinkage Compensation<\/a><\/h3>\r\n          <p>Understand how tooling compensation and sintering shrinkage affect final size.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-related-card\">\r\n          <h3><a href=\"https:\/\/xtmim.com\/mim-design-guide\/mim-tolerances\/\">MIM Tolerances<\/a><\/h3>\r\n          <p>Separate critical dimensions from general dimensions and plan inspection strategy.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-related-card\">\r\n          <h3><a href=\"https:\/\/xtmim.com\/mim-design-guide\/dfm\/\">DFM for MIM<\/a><\/h3>\r\n          <p>Use drawing-based review to reduce tooling, sintering, tolerance, and cost risks.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-related-card\">\r\n          <h3><a href=\"https:\/\/xtmim.com\/mim-design-guide\/design-mistakes\/\">Common Design Mistakes<\/a><\/h3>\r\n          <p>Identify avoidable issues before tooling and trial production.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <section class=\"xtmim-section\" id=\"related-engineering-articles\">\r\n      <h2>Related Engineering Articles<\/h2>\r\n      <p>\r\n        These articles provide supporting detail on how design and process conditions affect final MIM part quality. They should be used as supporting resources, not as replacements for this MIM part design guideline.\r\n      <\/p>\r\n\r\n      <div class=\"xtmim-grid-2\">\r\n        <div class=\"xtmim-related-card\">\r\n          <h3><a href=\"https:\/\/xtmim.com\/blogs\/how-part-design-affects-part-quality-in-mim\/\">How Part Design Affects MIM Part Quality<\/a><\/h3>\r\n          <p>Explains how design choices influence defects, stability, and production quality.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-related-card\">\r\n          <h3><a href=\"https:\/\/xtmim.com\/blogs\/how-part-dimensions-affect-final-mim-part-quality\/\">How Part Dimensions Affect Final MIM Quality<\/a><\/h3>\r\n          <p>Supports dimension, tolerance, and shrinkage-related review.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-related-card\">\r\n          <h3><a href=\"https:\/\/xtmim.com\/blogs\/what-affects-part-quality-in-mim\/\">Factors That Affect MIM Part Quality<\/a><\/h3>\r\n          <p>Provides a broader quality overview across material, process, design, and inspection.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-related-card\">\r\n          <h3><a href=\"https:\/\/xtmim.com\/blogs\/how-mold-design-affects-part-quality-in-mim\/\">How Mold Design Affects MIM Part Quality<\/a><\/h3>\r\n          <p>Supports tooling-related discussions such as parting line, gate, and ejection risk.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/section>\r\n\r\n    <section class=\"xtmim-section xtmim-standards\" id=\"standards\">\r\n      <h2>Standards, Engineering Review, and Practical Limits<\/h2>\r\n      <p>\r\n        MIM part design should be reviewed together with material selection, tolerance requirements, tooling strategy, sintering control, inspection method, and production feasibility. Industry references can guide the discussion, but they should not replace project-specific DFM review.\r\n      <\/p>\r\n      <p>\r\n        The <a href=\"https:\/\/www.mimaweb.org\/DesignCenter\/DesigningwithMIM.aspx\" target=\"_blank\" rel=\"nofollow noopener\">MIMA Design Center<\/a> is useful for understanding why MIM can support complex metal part geometry, part consolidation, and functional features. However, design freedom still needs to be checked against moldability, debinding behavior, sintering shrinkage, support strategy, and inspection requirements.\r\n      <\/p>\r\n      <p>\r\n        <a href=\"https:\/\/www.mpif.org\/Resources\/Standards.aspx\" target=\"_blank\" rel=\"nofollow noopener\">MPIF Standard 35-MIM<\/a> covers common materials used in metal injection molding with explanatory notes and definitions. It is most useful when material specification and engineering property expectations are being discussed, not as a universal geometry rulebook.\r\n      <\/p>\r\n      <p>\r\n        <a href=\"https:\/\/www.astm.org\/Standards\/B883.htm\" target=\"_blank\" rel=\"nofollow noopener\">ASTM B883<\/a> is relevant to ferrous metal injection molded materials and should be used as a material specification reference where applicable. It should not be used alone to decide wall thickness, gate location, undercut feasibility, sintering support, or dimensional tolerance strategy.\r\n      <\/p>\r\n      <p>\r\n        Final design recommendations should be confirmed through project-specific DFM review using the customer\u2019s drawing, 3D model, material requirement, tolerance specification, functional surfaces, surface finish needs, inspection criteria, and expected production volume.\r\n      <\/p>\r\n    <\/section>\r\n\r\n    <section class=\"xtmim-section xtmim-faq\" id=\"faq\">\r\n      <h2>FAQs About MIM Part Design<\/h2>\r\n\r\n      <details>\r\n        <summary>What makes a part suitable for MIM design?<\/summary>\r\n        <p>A suitable MIM part is usually small, complex, multi-featured, and intended for repeat production. The part should use MIM\u2019s strengths, such as molded holes, slots, ribs, bosses, undercuts, fine details, or assembly consolidation. The design should also be reviewed for wall balance, sintering support, material selection, tolerance requirements, and secondary operations before tooling.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>Can a CNC machined part be directly converted to MIM?<\/summary>\r\n        <p>Not usually. A CNC part is designed around cutting tools, while a MIM part must pass through injection molding, green part handling, debinding, and sintering shrinkage. Before conversion, the drawing should be reviewed for wall sections, holes, undercuts, critical surfaces, tolerances, datums, and post-machining requirements.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>How is MIM part design different from plastic injection molding design?<\/summary>\r\n        <p>MIM part design uses some moldability concepts similar to plastic injection molding, but the molded green part must later pass through debinding and high-shrinkage sintering to become a dense metal component. This means wall balance, support surfaces, shrinkage compensation, material behavior, and inspection strategy must be reviewed more carefully than in a simple plastic part design comparison.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>Which part features need special review before MIM tooling?<\/summary>\r\n        <p>Thin walls, thick local sections, cross holes, deep slots, undercuts, long unsupported spans, sharp corners, cosmetic surfaces, sealing faces, bearing seats, and tight tolerance features should be reviewed before tooling. These features may affect mold design, gate location, ejection, sintering distortion, inspection, or secondary machining.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>Does MIM allow undercuts and internal features?<\/summary>\r\n        <p>MIM can support complex features, including some undercuts and internal details, but feasibility depends on mold action, core pin strength, feature direction, demolding, flash control, and cost. Some undercuts are practical; others may require slides, redesign, or secondary machining.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>How does part design affect sintering distortion?<\/summary>\r\n        <p>Sintering distortion is influenced by wall imbalance, uneven mass, long unsupported spans, flatness-sensitive areas, thin frames, and unstable support surfaces. A geometry that looks acceptable in CAD may still move during sintering if shrinkage and support are not considered during design review.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>Do all MIM dimensions need tight tolerances?<\/summary>\r\n        <p>No. Tight tolerances should be applied only to dimensions that affect function, assembly, sealing, rotation, positioning, or inspection. General dimensions should be controlled according to realistic MIM capability, while critical features may need secondary machining, sizing, or a dedicated inspection strategy.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>How should critical dimensions be marked for a MIM part design review?<\/summary>\r\n        <p>Critical dimensions should be separated from general dimensions and linked to functional surfaces, assembly requirements, datum references, and inspection methods. If a dimension controls sealing, sliding, rotation, fit, positioning, or safety-related assembly, it should be clearly marked so the MIM supplier can review tolerance strategy, secondary machining, and measurement feasibility before tooling.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>What files should I provide for a MIM part design review?<\/summary>\r\n        <p>Provide a 2D drawing with tolerances, a 3D CAD file, material requirements, estimated annual volume, functional surfaces, surface finish requirements, heat treatment or coating needs, assembly requirements, and any current manufacturing problems. These inputs help the engineering team review manufacturability before tooling.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>When should I request a MIM DFM review?<\/summary>\r\n        <p>Request a MIM DFM review before mold construction, especially if the part has thin walls, thick local sections, holes, slots, undercuts, critical surfaces, tight assembly dimensions, or high machining cost. Early review helps confirm process suitability, tooling risk, sintering support, tolerance strategy, inspection planning, and secondary operation needs before investment is locked.<\/p>\r\n      <\/details>\r\n    <\/section>\r\n\r\n    <section class=\"xtmim-author\" id=\"engineering-review\">\r\n      <h2>Reviewed by XTMIM Engineering Team<\/h2>\r\n      <p>\r\n        This article was prepared and reviewed by the XTMIM Engineering Team for MIM part design, DFM, tooling risk, sintering behavior, tolerance planning, inspection strategy, and drawing-based project evaluation. The review focuses on process suitability, material selection considerations, manufacturability risks, shrinkage and sintering support, critical dimensions, inspection requirements, and production feasibility.\r\n      <\/p>\r\n      <p>\r\n        The recommendations in this article are intended for early engineering review. Final design decisions should be confirmed through project-specific DFM review using the customer\u2019s drawing, 3D model, material requirement, tolerance specification, functional surfaces, surface finish needs, inspection criteria, and expected production volume.\r\n      <\/p>\r\n    <\/section>\r\n  <\/div>\r\n<\/article>\r\n\r\n<script type=\"application\/ld+json\">\r\n{\r\n  \"@context\":\"https:\/\/schema.org\",\r\n  \"@type\":\"FAQPage\",\r\n  \"mainEntity\":[\r\n    {\r\n      \"@type\":\"Question\",\r\n      \"name\":\"What makes a part suitable for MIM design?\",\r\n      \"acceptedAnswer\":{\r\n        \"@type\":\"Answer\",\r\n        \"text\":\"A suitable MIM part is usually small, complex, multi-featured, and intended for repeat production. The part should use MIM\u2019s strengths, such as molded holes, slots, ribs, bosses, undercuts, fine details, or assembly consolidation. 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Some undercuts are practical; others may require slides, redesign, or secondary machining.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\":\"Question\",\r\n      \"name\":\"How does part design affect sintering distortion?\",\r\n      \"acceptedAnswer\":{\r\n        \"@type\":\"Answer\",\r\n        \"text\":\"Sintering distortion is influenced by wall imbalance, uneven mass, long unsupported spans, flatness-sensitive areas, thin frames, and unstable support surfaces. A geometry that looks acceptable in CAD may still move during sintering if shrinkage and support are not considered during design review.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\":\"Question\",\r\n      \"name\":\"Do all MIM dimensions need tight tolerances?\",\r\n      \"acceptedAnswer\":{\r\n        \"@type\":\"Answer\",\r\n        \"text\":\"No. Tight tolerances should be applied only to dimensions that affect function, assembly, sealing, rotation, positioning, or inspection. 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It is not only a CAD geometry check. A good MIM part design must consider overall part size, wall balance, holes, slots,&#8230;<\/p>","protected":false},"author":1,"featured_media":0,"parent":53542,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-53860","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/xtmim.com\/fr\/wp-json\/wp\/v2\/pages\/53860","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xtmim.com\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/xtmim.com\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/xtmim.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xtmim.com\/fr\/wp-json\/wp\/v2\/comments?post=53860"}],"version-history":[{"count":22,"href":"https:\/\/xtmim.com\/fr\/wp-json\/wp\/v2\/pages\/53860\/revisions"}],"predecessor-version":[{"id":54116,"href":"https:\/\/xtmim.com\/fr\/wp-json\/wp\/v2\/pages\/53860\/revisions\/54116"}],"up":[{"embeddable":true,"href":"https:\/\/xtmim.com\/fr\/wp-json\/wp\/v2\/pages\/53542"}],"wp:attachment":[{"href":"https:\/\/xtmim.com\/fr\/wp-json\/wp\/v2\/media?parent=53860"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}