{"id":53542,"date":"2026-05-12T02:30:57","date_gmt":"2026-05-12T02:30:57","guid":{"rendered":"https:\/\/xtmim.com\/?page_id=53542"},"modified":"2026-05-12T02:38:07","modified_gmt":"2026-05-12T02:38:07","slug":"mim-design-guide","status":"publish","type":"page","link":"https:\/\/xtmim.com\/ja\/mim-design-guide\/","title":{"rendered":"\u91d1\u5c5e\u5c04\u51fa\u6210\u5f62\uff08MIM\uff09\u8a2d\u8a08\u30ac\u30a4\u30c9"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"53542\" class=\"elementor elementor-53542\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-972a460 e-con-full e-flex cmsmasters-bg-hide-none cmsmasters-bg-hide-none cmsmasters-block-default e-con e-parent\" data-id=\"972a460\" 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-9a9dd37 e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"9a9dd37\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t\t\t\t<h1 \n\t\tdata-interaction-id=\"36ad36f\" \n\t\tclass=\"e-36ad36f-787de40 e-heading-base\" \n\t\t \n\t\tdata-e-type=\"widget\" data-id=\"36ad36f\"\n\t>\n\t\n\t\t\tMIM Design Guide: DFM Rules Before Tooling\n\t\t<\/h1>\n\t\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-20dc20e e-con-full e-flex cmsmasters-block-default e-con e-parent\" data-id=\"20dc20e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-a944d29 e-flex e-con-boxed cmsmasters-block-default e-con e-child\" data-id=\"a944d29\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6f4048e cmsmasters-block-default cmsmasters-sticky-default elementor-widget elementor-widget-html\" data-id=\"6f4048e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<style>\r\n.xtmim-design-guide{\r\n  --xt-primary:#0b3a67;\r\n  --xt-primary-dark:#082747;\r\n  --xt-primary-soft:#eaf3fb;\r\n  --xt-bg:#ffffff;\r\n  --xt-bg-soft:#f6f8fb;\r\n  --xt-bg-blue:#f0f6fc;\r\n  --xt-border:#dfe6ef;\r\n  --xt-text:#172033;\r\n  --xt-muted:#5f6b7a;\r\n  --xt-accent:#2f7fbf;\r\n  --xt-warning:#b45309;\r\n  --xt-success:#0f766e;\r\n  --xt-radius-sm:10px;\r\n  --xt-radius-md:16px;\r\n  --xt-radius-lg:22px;\r\n  --xt-shadow-sm:0 8px 22px rgba(15,35,70,.06);\r\n  --xt-shadow-md:0 14px 36px rgba(15,35,70,.08);\r\n  --xt-container:1600px;\r\n  --xt-font-base:16px;\r\n  --xt-font-family:Arial,Helvetica,sans-serif;\r\n  width:100%;\r\n  overflow-x:hidden;\r\n  font-family:var(--xt-font-family);\r\n  color:var(--xt-text);\r\n  background:var(--xt-bg);\r\n  line-height:1.72;\r\n  font-size:var(--xt-font-base);\r\n}\r\n.xtmim-design-guide,\r\n.xtmim-design-guide section,\r\n.xtmim-design-guide div,\r\n.xtmim-design-guide nav,\r\n.xtmim-design-guide figure,\r\n.xtmim-design-guide figcaption,\r\n.xtmim-design-guide table,\r\n.xtmim-design-guide th,\r\n.xtmim-design-guide td,\r\n.xtmim-design-guide a,\r\n.xtmim-design-guide img,\r\n.xtmim-design-guide details,\r\n.xtmim-design-guide summary,\r\n.xtmim-design-guide ul,\r\n.xtmim-design-guide ol,\r\n.xtmim-design-guide li{\r\n  box-sizing:border-box;\r\n}\r\n.xtmim-design-guide a{\r\n  color:var(--xt-primary);\r\n  text-decoration:none;\r\n  font-weight:700;\r\n  overflow-wrap:break-word;\r\n}\r\n.xtmim-design-guide a:hover{\r\n  text-decoration:underline;\r\n}\r\n.xtmim-design-guide img{\r\n  max-width:100%;\r\n  height:auto;\r\n}\r\n.xtmim-design-guide .xtmim-wrap{\r\n  max-width:var(--xt-container);\r\n  margin:0 auto;\r\n  padding:0 18px;\r\n}\r\n.xtmim-design-guide .xtmim-section{\r\n  padding:54px 0;\r\n  border-bottom:1px solid var(--xt-border);\r\n}\r\n.xtmim-design-guide .xtmim-section:last-of-type{\r\n  border-bottom:none;\r\n}\r\n.xtmim-design-guide .xtmim-hero{\r\n  background:\r\n    linear-gradient(135deg,rgba(8,39,71,.96),rgba(13,74,122,.92)),\r\n    url(\"https:\/\/xtmim.com\/wp-content\/uploads\/2026\/05\/01-mim-design-review-before-tooling.webp\") center center\/cover no-repeat;\r\n  color:#fff;\r\n  padding:74px 0 52px;\r\n}\r\n.xtmim-design-guide .xtmim-hero-grid{\r\n  display:grid;\r\n  grid-template-columns:minmax(0,1.1fr) minmax(280px,.9fr);\r\n  gap:28px;\r\n  align-items:end;\r\n}\r\n.xtmim-design-guide .xtmim-eyebrow{\r\n  display:inline-flex;\r\n  gap:8px;\r\n  align-items:center;\r\n  padding:7px 12px;\r\n  border-radius:999px;\r\n  background:rgba(255,255,255,.12);\r\n  border:1px solid rgba(255,255,255,.24);\r\n  color:#dcefff;\r\n  font-weight:800;\r\n  font-size:13px;\r\n  letter-spacing:.04em;\r\n  text-transform:uppercase;\r\n  margin-bottom:14px;\r\n}\r\n.xtmim-design-guide .xtmim-page-title{\r\n  font-size:42px;\r\n  line-height:1.12;\r\n  margin:0 0 18px;\r\n  color:#fff;\r\n  letter-spacing:-.03em;\r\n}\r\n.xtmim-design-guide .xtmim-hero p{\r\n  color:#edf6ff;\r\n  font-size:18px;\r\n  margin:0 0 18px;\r\n  max-width:880px;\r\n}\r\n.xtmim-design-guide .xtmim-hero-card{\r\n  background:rgba(255,255,255,.12);\r\n  border:1px solid rgba(255,255,255,.22);\r\n  border-radius:var(--xt-radius-lg);\r\n  padding:22px;\r\n  backdrop-filter:blur(8px);\r\n}\r\n.xtmim-design-guide .xtmim-hero-card strong{\r\n  display:block;\r\n  font-size:15px;\r\n  color:#fff;\r\n  margin-bottom:8px;\r\n}\r\n.xtmim-design-guide .xtmim-hero-card ul{\r\n  margin:0;\r\n  padding-left:18px;\r\n  color:#edf6ff;\r\n}\r\n.xtmim-design-guide .xtmim-btns{\r\n  display:flex;\r\n  flex-wrap:wrap;\r\n  gap:12px;\r\n  margin-top:24px;\r\n}\r\n.xtmim-design-guide .xtmim-btn{\r\n  display:inline-flex;\r\n  align-items:center;\r\n  justify-content:center;\r\n  padding:12px 18px;\r\n  border-radius:999px;\r\n  border:1px solid transparent;\r\n  font-weight:800;\r\n  line-height:1.2;\r\n  min-height:44px;\r\n  text-align:center;\r\n}\r\n.xtmim-design-guide .xtmim-btn-primary{\r\n  background:#fff;\r\n  color:var(--xt-primary-dark);\r\n}\r\n.xtmim-design-guide .xtmim-btn-secondary{\r\n  background:rgba(255,255,255,.12);\r\n  color:#fff;\r\n  border-color:rgba(255,255,255,.34);\r\n}\r\n.xtmim-design-guide h2{\r\n  font-size:31px;\r\n  line-height:1.24;\r\n  margin:0 0 18px;\r\n  color:var(--xt-primary-dark);\r\n  letter-spacing:-.02em;\r\n}\r\n.xtmim-design-guide h3{\r\n  font-size:21px;\r\n  line-height:1.35;\r\n  margin:28px 0 10px;\r\n  color:var(--xt-primary);\r\n}\r\n.xtmim-design-guide h4{\r\n  font-size:18px;\r\n  line-height:1.35;\r\n  margin:18px 0 8px;\r\n  color:var(--xt-primary-dark);\r\n}\r\n.xtmim-design-guide p{\r\n  margin:0 0 16px;\r\n}\r\n.xtmim-design-guide .xtmim-lead{\r\n  font-size:18px;\r\n  color:#314155;\r\n}\r\n.xtmim-design-guide .xtmim-muted{\r\n  color:var(--xt-muted);\r\n}\r\n.xtmim-design-guide .xtmim-grid-2{\r\n  display:grid;\r\n  grid-template-columns:repeat(2,minmax(0,1fr));\r\n  gap:20px;\r\n}\r\n.xtmim-design-guide .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-design-guide .xtmim-card{\r\n  background:#fff;\r\n  border:1px solid var(--xt-border);\r\n  border-radius:var(--xt-radius-lg);\r\n  padding:22px;\r\n  box-shadow:var(--xt-shadow-md);\r\n}\r\n.xtmim-design-guide .xtmim-card h3,\r\n.xtmim-design-guide .xtmim-card h4{\r\n  margin-top:0;\r\n}\r\n.xtmim-design-guide .xtmim-note,\r\n.xtmim-design-guide .xtmim-quick-answer{\r\n  background:var(--xt-primary-soft);\r\n  border:1px solid #cfe2f3;\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:20px 0;\r\n}\r\n.xtmim-design-guide .xtmim-warning{\r\n  background:#fff7ed;\r\n  border:1px solid #fed7aa;\r\n  border-left:5px solid var(--xt-warning);\r\n  border-radius:var(--xt-radius-md);\r\n  padding:18px 20px;\r\n  margin:20px 0;\r\n}\r\n.xtmim-design-guide .xtmim-success{\r\n  background:#ecfdf5;\r\n  border:1px solid #bae6d4;\r\n  border-left:5px solid var(--xt-success);\r\n  border-radius:var(--xt-radius-md);\r\n  padding:18px 20px;\r\n  margin:20px 0;\r\n}\r\n.xtmim-design-guide .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-design-guide .xtmim-figure img{\r\n  display:block;\r\n  width:100%;\r\n  height:auto;\r\n}\r\n.xtmim-design-guide .xtmim-figure figcaption{\r\n  padding:16px 18px 6px;\r\n  font-size:14px;\r\n  line-height:1.55;\r\n  color:var(--xt-muted);\r\n  background:#fff;\r\n}\r\n.xtmim-design-guide .xtmim-figure-note{\r\n  padding:0 18px 18px;\r\n  font-size:15px;\r\n  color:#334155;\r\n}\r\n.xtmim-design-guide .xtmim-table-wrap{\r\n  overflow-x:auto;\r\n  margin:22px 0;\r\n  border:1px solid var(--xt-border);\r\n  border-radius:18px;\r\n  background:#fff;\r\n  box-shadow:var(--xt-shadow-sm);\r\n  -webkit-overflow-scrolling:touch;\r\n}\r\n.xtmim-design-guide table{\r\n  width:100%;\r\n  border-collapse:collapse;\r\n  min-width:760px;\r\n}\r\n.xtmim-design-guide th{\r\n  background:var(--xt-primary);\r\n  color:#fff;\r\n  text-align:left;\r\n  padding:13px 14px;\r\n  font-size:14px;\r\n  line-height:1.45;\r\n  vertical-align:top;\r\n}\r\n.xtmim-design-guide td{\r\n  border-top:1px solid var(--xt-border);\r\n  padding:13px 14px;\r\n  vertical-align:top;\r\n  font-size:15px;\r\n}\r\n.xtmim-design-guide tr:nth-child(even) td{\r\n  background:#f9fbfd;\r\n}\r\n.xtmim-design-guide ul,\r\n.xtmim-design-guide ol{\r\n  margin:10px 0 18px;\r\n  padding-left:22px;\r\n}\r\n.xtmim-design-guide li{\r\n  margin:6px 0;\r\n}\r\n.xtmim-design-guide .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:22px;\r\n  margin-top:26px;\r\n}\r\n.xtmim-design-guide .xtmim-toc ul{\r\n  columns:2;\r\n  margin-bottom:0;\r\n}\r\n.xtmim-design-guide .xtmim-topic-card{\r\n  display:block;\r\n  height:100%;\r\n  background:#fff;\r\n  border:1px solid var(--xt-border);\r\n  border-radius:18px;\r\n  padding:18px;\r\n  box-shadow:var(--xt-shadow-sm);\r\n}\r\n.xtmim-design-guide .xtmim-topic-card span{\r\n  display:block;\r\n  color:var(--xt-muted);\r\n  font-weight:400;\r\n  margin-top:6px;\r\n}\r\n.xtmim-design-guide .xtmim-steps{\r\n  counter-reset:xtstep;\r\n  display:grid;\r\n  gap:14px;\r\n}\r\n.xtmim-design-guide .xtmim-step{\r\n  position:relative;\r\n  background:#fff;\r\n  border:1px solid var(--xt-border);\r\n  border-radius:18px;\r\n  padding:18px 18px 18px 58px;\r\n}\r\n.xtmim-design-guide .xtmim-step:before{\r\n  counter-increment:xtstep;\r\n  content:counter(xtstep);\r\n  position:absolute;\r\n  left:18px;\r\n  top:18px;\r\n  width:28px;\r\n  height:28px;\r\n  border-radius:50%;\r\n  background:var(--xt-primary);\r\n  color:#fff;\r\n  display:flex;\r\n  align-items:center;\r\n  justify-content:center;\r\n  font-weight:800;\r\n}\r\n.xtmim-design-guide .xtmim-step h3{\r\n  margin:0 0 6px;\r\n  font-size:19px;\r\n}\r\n.xtmim-design-guide .xtmim-scenario{\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  margin-top:24px;\r\n}\r\n.xtmim-design-guide .xtmim-scenario-grid{\r\n  display:grid;\r\n  grid-template-columns:repeat(5,minmax(0,1fr));\r\n  gap:12px;\r\n  margin-top:16px;\r\n}\r\n.xtmim-design-guide .xtmim-scenario-item{\r\n  background:var(--xt-bg-soft);\r\n  border:1px solid var(--xt-border);\r\n  border-radius:14px;\r\n  padding:14px;\r\n  font-size:14px;\r\n}\r\n.xtmim-design-guide .xtmim-scenario-item strong{\r\n  display:block;\r\n  color:var(--xt-primary-dark);\r\n  margin-bottom:6px;\r\n}\r\n.xtmim-design-guide .xtmim-cta{\r\n  background:linear-gradient(135deg,var(--xt-primary-dark),#0d5a92);\r\n  color:#fff;\r\n  border-radius:28px;\r\n  padding:34px;\r\n  margin-top:20px;\r\n}\r\n.xtmim-design-guide .xtmim-cta h2,\r\n.xtmim-design-guide .xtmim-cta h3{\r\n  color:#fff;\r\n}\r\n.xtmim-design-guide .xtmim-cta p,\r\n.xtmim-design-guide .xtmim-cta li{\r\n  color:#eef7ff;\r\n}\r\n.xtmim-design-guide .xtmim-cta .xtmim-btn-primary{\r\n  background:#fff;\r\n  color:var(--xt-primary-dark);\r\n}\r\n.xtmim-design-guide .xtmim-faq details{\r\n  background:#fff;\r\n  border:1px solid var(--xt-border);\r\n  border-radius:16px;\r\n  padding:16px 18px;\r\n  margin:12px 0;\r\n}\r\n.xtmim-design-guide .xtmim-faq summary{\r\n  cursor:pointer;\r\n  font-weight:800;\r\n  color:var(--xt-primary-dark);\r\n  min-height:32px;\r\n}\r\n.xtmim-design-guide .xtmim-faq details p{\r\n  margin-top:12px;\r\n  margin-bottom:0;\r\n}\r\n.xtmim-design-guide .xtmim-author{\r\n  display:grid;\r\n  grid-template-columns:72px minmax(0,1fr);\r\n  gap:18px;\r\n  align-items:start;\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:22px;\r\n}\r\n.xtmim-design-guide .xtmim-author-icon{\r\n  width:72px;\r\n  height:72px;\r\n  border-radius:50%;\r\n  background:var(--xt-primary);\r\n  color:#fff;\r\n  display:flex;\r\n  align-items:center;\r\n  justify-content:center;\r\n  font-weight:900;\r\n  font-size:22px;\r\n}\r\n.xtmim-design-guide .xtmim-standards{\r\n  margin-top:24px;\r\n}\r\n.xtmim-design-guide .xtmim-small{\r\n  font-size:14px;\r\n  color:var(--xt-muted);\r\n}\r\n@media (max-width:900px){\r\n  .xtmim-design-guide .xtmim-hero-grid,\r\n  .xtmim-design-guide .xtmim-grid-2,\r\n  .xtmim-design-guide .xtmim-grid-3,\r\n  .xtmim-design-guide .xtmim-scenario-grid{\r\n    grid-template-columns:1fr;\r\n  }\r\n  .xtmim-design-guide .xtmim-hero{\r\n    padding:54px 0 40px;\r\n  }\r\n  .xtmim-design-guide .xtmim-page-title{\r\n    font-size:32px;\r\n  }\r\n  .xtmim-design-guide h2{\r\n    font-size:27px;\r\n  }\r\n  .xtmim-design-guide h3{\r\n    font-size:21px;\r\n  }\r\n  .xtmim-design-guide .xtmim-toc ul{\r\n    columns:1;\r\n  }\r\n}\r\n@media (max-width:600px){\r\n  .xtmim-design-guide{\r\n    font-size:15px;\r\n  }\r\n  .xtmim-design-guide .xtmim-wrap{\r\n    padding:0 16px;\r\n  }\r\n  .xtmim-design-guide .xtmim-section{\r\n    padding:40px 0;\r\n  }\r\n  .xtmim-design-guide .xtmim-page-title{\r\n    font-size:28px;\r\n  }\r\n  .xtmim-design-guide h2{\r\n    font-size:25px;\r\n  }\r\n  .xtmim-design-guide h3{\r\n    font-size:20px;\r\n  }\r\n  .xtmim-design-guide .xtmim-hero p,\r\n  .xtmim-design-guide .xtmim-lead{\r\n    font-size:16px;\r\n  }\r\n  .xtmim-design-guide .xtmim-cta{\r\n    padding:24px;\r\n  }\r\n  .xtmim-design-guide .xtmim-author{\r\n    grid-template-columns:1fr;\r\n  }\r\n  .xtmim-design-guide .xtmim-btns{\r\n    display:grid;\r\n    grid-template-columns:1fr;\r\n  }\r\n  .xtmim-design-guide .xtmim-btn{\r\n    width:100%;\r\n  }\r\n}\r\n<\/style>\r\n\r\n<article class=\"xtmim-design-guide\">\r\n  <section class=\"xtmim-hero\">\r\n    <div class=\"xtmim-wrap\">\r\n      <div class=\"xtmim-hero-grid\">\r\n        <div class=\"xtmim-hero-body\">\r\n          <div class=\"xtmim-eyebrow\">MIM Design Guide<\/div>\r\n          <h2 class=\"xtmim-page-title\">Metal Injection Molding Design Guide for DFM Review Before Tooling<\/h2>\r\n          <p>A practical MIM design guide helps product engineers decide whether a small, complex metal part can be molded, debound, sintered, inspected, and produced consistently before tooling investment. The key issue is not only whether the CAD model is possible. The part must also survive feedstock injection, green part handling, binder removal, sintering shrinkage, dimensional control, and final inspection.<\/p>\r\n          <p>This page is useful when a part includes thin walls, side holes, slots, undercuts, fine features, gate-sensitive surfaces, tight tolerances, or current CNC cost problems. It helps engineering and sourcing teams identify what should be reviewed before mold design, prototype trials, and RFQ confirmation.<\/p>\r\n          <div class=\"xtmim-btns\">\r\n            <a class=\"xtmim-btn xtmim-btn-primary\" href=\"#mim-design-factors\">Review Design Factors<\/a>\r\n            <a class=\"xtmim-btn xtmim-btn-secondary\" href=\"#related-topics\">Explore Design Topics<\/a>\r\n            <a class=\"xtmim-btn xtmim-btn-secondary\" href=\"https:\/\/xtmim.com\/submit-drawing-for-review\/\">Submit Drawing for Review<\/a>\r\n          <\/div>\r\n        <\/div>\r\n        <div class=\"xtmim-hero-card\">\r\n          <strong>Engineering summary<\/strong>\r\n          <ul>\r\n            <li>Review geometry, wall thickness, holes, slots, undercuts, gate location, and parting line before tooling.<\/li>\r\n            <li>Check sintering support, shrinkage compensation, tolerance strategy, and secondary operations before quotation is finalized.<\/li>\r\n            <li>Use drawing-based DFM review to reduce tooling changes, distortion, unnecessary machining, and production uncertainty.<\/li>\r\n          <\/ul>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"xtmim-section\" id=\"quick-answer\">\r\n    <div class=\"xtmim-wrap\">\r\n      <figure class=\"xtmim-figure\">\r\n        <figcaption>MIM design review connects CAD geometry, tooling, feedstock injection, green part handling, debinding, sintering shrinkage, tolerance control, and inspection before the mold is finalized.<\/figcaption>\r\n        <div class=\"xtmim-figure-note\"><strong>Core conclusion:<\/strong> MIM design is a full-process manufacturability review, not a CAD geometry check alone.<\/div>\r\n      <\/figure>\r\n\r\n      <p class=\"xtmim-lead\">For product engineers, the main review areas include wall thickness, transitions, holes, slots, undercuts, gate location, parting line, witness marks, sintering support, shrinkage compensation, tolerances, and secondary operations. For sourcing teams, the same review affects tooling cost, lead time, quote accuracy, inspection burden, and mass production risk.<\/p>\r\n\r\n      <div class=\"xtmim-note\">\r\n        <strong>Page scope:<\/strong> This page is the L2 design guide hub for MIM DFM review before tooling. It gives the overall engineering framework and directs users to detailed design sub-guides. Detailed topics such as <a href=\"https:\/\/xtmim.com\/mim-design-guide\/wall-thickness\/\">wall thickness design<\/a>, <a href=\"https:\/\/xtmim.com\/mim-design-guide\/holes-slots-undercuts\/\">holes, slots, and undercuts<\/a>, <a href=\"https:\/\/xtmim.com\/mim-design-guide\/gate-design\/\">gate design<\/a>, <a href=\"https:\/\/xtmim.com\/mim-design-guide\/sintering-supports\/\">sintering supports<\/a>, <a href=\"https:\/\/xtmim.com\/mim-design-guide\/shrinkage-compensation\/\">shrinkage compensation<\/a>, and <a href=\"https:\/\/xtmim.com\/mim-design-guide\/mim-tolerances\/\">MIM tolerances<\/a> should be reviewed in their dedicated pages.\r\n      <\/div>\r\n\r\n      <nav class=\"xtmim-toc\" aria-label=\"MIM design guide table of contents\">\r\n        <strong>On this page<\/strong>\r\n        <ul>\r\n          <li><a href=\"#suitable-for-review\">What makes a part suitable for MIM design review?<\/a><\/li>\r\n          <li><a href=\"#mim-design-factors\">Key MIM design factors engineers should check<\/a><\/li>\r\n          <li><a href=\"#tooling-cost-risk\">How design decisions affect tooling, cost, and risk<\/a><\/li>\r\n          <li><a href=\"#when-reconsidered\">When MIM design should be reconsidered<\/a><\/li>\r\n          <li><a href=\"#review-matrix\">MIM design review matrix<\/a><\/li>\r\n          <li><a href=\"#design-mistakes\">Common MIM design mistakes<\/a><\/li>\r\n          <li><a href=\"#review-workflow\">Design review workflow<\/a><\/li>\r\n          <li><a href=\"#composite-scenario\">Composite field scenario<\/a><\/li>\r\n          <li><a href=\"#dfm-inputs\">What to prepare for DFM review<\/a><\/li>\r\n          <li><a href=\"#related-topics\">Explore detailed MIM design topics<\/a><\/li>\r\n          <li><a href=\"#faq\">FAQs<\/a><\/li>\r\n        <\/ul>\r\n      <\/nav>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"xtmim-section\" id=\"suitable-for-review\">\r\n    <div class=\"xtmim-wrap\">\r\n      <h2>What Makes a Part Suitable for MIM Design Review?<\/h2>\r\n      <p>MIM design review is most useful when the part combines small size, complex geometry, metal performance requirements, and meaningful production volume. Typical candidates include parts with thin walls, small holes, slots, undercuts, bosses, fine features, integrated functions, or shapes that would require multiple CNC setups if machined from bar stock.<\/p>\r\n\r\n      <div class=\"xtmim-grid-3\">\r\n        <div class=\"xtmim-card\">\r\n          <h3>When MIM Design Usually Makes Sense<\/h3>\r\n          <p>MIM becomes attractive when several functional features can be integrated into one near-net-shape metal part. This is especially relevant when machining, assembling, or welding multiple small parts creates cost, tolerance stack-up, or repeatability problems.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-card\">\r\n          <h3>When Review Is Needed Before Tooling<\/h3>\r\n          <p>Review is needed when the part includes thin walls, side holes, undercuts, critical surfaces, tight tolerances, flatness requirements, cosmetic surfaces, or features that may need post-sinter machining.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-card\">\r\n          <h3>When Another Process May Fit Better<\/h3>\r\n          <p>If the part is large, simple, extremely low volume, or requires extensive machining after sintering, CNC machining, casting, stamping, or conventional PM may be more practical than MIM.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"xtmim-table-wrap\">\r\n        <table>\r\n          <thead>\r\n            <tr>\r\n              <th>Design condition<\/th>\r\n              <th>Why it needs review before tooling<\/th>\r\n              <th>Typical review focus<\/th>\r\n            <\/tr>\r\n          <\/thead>\r\n          <tbody>\r\n            <tr>\r\n              <td>Thin walls or large wall variation<\/td>\r\n              <td>May affect filling, debinding, sintering distortion, and dimensional control.<\/td>\r\n              <td>Wall thickness, transitions, mass concentration, and support strategy.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Holes, slots, and internal features<\/td>\r\n              <td>May require core pins, slides, tool seal-off, or post-machining.<\/td>\r\n              <td>Feature direction, core support, flash risk, and inspection access.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Undercuts or side features<\/td>\r\n              <td>May require split tooling, slides, collapsible cores, or design simplification.<\/td>\r\n              <td>Tool motion, mold cost, flash control, and maintenance risk.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Critical functional surfaces<\/td>\r\n              <td>May be affected by gate vestige, ejector marks, parting line, or machining allowance.<\/td>\r\n              <td>Gate location, parting line, datum plan, and surface protection.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Tight tolerances<\/td>\r\n              <td>May not be realistic as-sintered without secondary operations.<\/td>\r\n              <td>Tolerance strategy, datum control, machining allowance, and inspection plan.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Flatness or straightness requirements<\/td>\r\n              <td>May be affected by sintering support and part orientation.<\/td>\r\n              <td>Support plane, setter requirement, sintering orientation, and final acceptance method.<\/td>\r\n            <\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n\r\n      <p>In practice, the correct decision is often not simply \u201cMIM or not MIM.\u201d The better question is: <strong>Can the part be designed so that MIM reduces machining, assembly, or part count without creating unacceptable tooling, sintering, tolerance, or inspection risk?<\/strong><\/p>\r\n\r\n      <p>For process-level context, see <a href=\"https:\/\/xtmim.com\/metal-injection-molding\/\">Metal Injection Molding<\/a>. For manufacturing-route comparison, see <a href=\"https:\/\/xtmim.com\/mim-comparison\/mim-vs-cnc\/\">MIM vs CNC Machining<\/a>. If the project is still early, use <a href=\"https:\/\/xtmim.com\/rfq-preparation-guide\/\">RFQ Preparation Guide<\/a> to organize basic engineering inputs.<\/p>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"xtmim-section\" id=\"mim-design-factors\">\r\n    <div class=\"xtmim-wrap\">\r\n      <h2>Key MIM Design Factors Engineers Should Check Before Tooling<\/h2>\r\n      <p>The best MIM design review checks how each feature affects downstream manufacturing risk. A part that looks feasible in CAD may still create mold release problems, fragile green part handling, debinding sensitivity, sintering distortion, shrinkage variation, or excessive inspection cost.<\/p>\r\n\r\n      <figure class=\"xtmim-figure\">\r\n        <img loading=\"lazy\" src=\"https:\/\/xtmim.com\/wp-content\/uploads\/2026\/05\/02-mim-design-factor-review-matrix.webp\" alt=\"MIM design factor review matrix connecting wall thickness, holes, undercuts, gate location, parting line, sintering support, shrinkage compensation, and tolerances to manufacturing risk.\" title=\"MIM Design Factor Review Matrix\" width=\"1600\" height=\"900\" loading=\"lazy\" decoding=\"async\">\r\n        <figcaption>A practical MIM design review should connect geometry, tooling, molding, debinding, sintering, shrinkage, tolerance, and inspection risks before tooling.<\/figcaption>\r\n        <div class=\"xtmim-figure-note\"><strong>Core conclusion:<\/strong> Each design feature should be evaluated by downstream risk, not only by whether it can be modeled in CAD.<\/div>\r\n      <\/figure>\r\n\r\n      <h3>Part Geometry and Feature Complexity<\/h3>\r\n      <p>MIM can produce complex features that are difficult or costly to machine, but complexity still has to be evaluated through tooling and sintering logic. Features that look simple in CAD may require side actions, thin core pins, fragile green part handling, or special sintering support.<\/p>\r\n      <p>From a design review perspective, the part should be checked for mold release, green part handling, debinding stability, sintering support, final inspection, and secondary operations. A complex feature is valuable only when it reduces real machining, assembly, or function-related cost without creating a larger production risk.<\/p>\r\n\r\n      <h3>Wall Thickness and Thickness Transitions<\/h3>\r\n      <p>Uniform wall thickness is one of the most important MIM design principles. Large thickness differences can cause inconsistent feedstock filling, binder removal problems, non-uniform shrinkage, sink marks, warpage, cracking, or local dimensional drift.<\/p>\r\n      <p>The goal is not to force every section to the same thickness. Some parts require local mass for strength, threads, load transfer, or assembly. The review question is whether thick regions can be cored, blended, ribbed, or supported so that the part can debind and sinter more predictably.<\/p>\r\n\r\n      <h3>Draft, Fillets, Radii, and Ejection Risk<\/h3>\r\n      <p>Draft, fillets, and radii are not cosmetic CAD details. They affect tool release, feedstock flow, corner stress, green part damage, and mold wear. Draft helps the molded green part release from mold surfaces and core pins. Fillets and radii reduce sharp-corner stress and make flow and sintering behavior more stable.<\/p>\r\n\r\n      <figure class=\"xtmim-figure\">\r\n        <img loading=\"lazy\" src=\"https:\/\/xtmim.com\/wp-content\/uploads\/2026\/05\/03-good-poor-mim-geometry-design.webp\" alt=\"Good and poor MIM geometry comparison showing wall thickness transitions, radii, holes, undercuts, gate position, and support-friendly design features.\" title=\"Good and Poor MIM Geometry Design Examples\" width=\"1600\" height=\"900\" loading=\"lazy\" decoding=\"async\">\r\n        <figcaption>Poor MIM geometry often concentrates mass, creates sharp transitions, or ignores tool motion; improved geometry supports molding, debinding, sintering, and inspection.<\/figcaption>\r\n        <div class=\"xtmim-figure-note\"><strong>Core conclusion:<\/strong> A MIM part should be reviewed for manufacturability across the full process, not only for CAD feasibility.<\/div>\r\n      <\/figure>\r\n\r\n      <h3>Holes, Slots, Undercuts, and Internal Features<\/h3>\r\n      <p>Holes, slots, and undercuts are common reasons engineers consider MIM, but they must be reviewed against tool motion, core support, flash risk, inspection access, and possible secondary machining. A hole that is easy to draw in CAD may still require slides, special seal-off geometry, or a design adjustment before tooling.<\/p>\r\n      <p>For detailed feature-level guidance, use the dedicated page: <a href=\"https:\/\/xtmim.com\/mim-design-guide\/holes-slots-undercuts\/\">Holes, Slots, and Undercuts in MIM Design<\/a>.<\/p>\r\n\r\n      <h3>Gate Location and Gate Vestige<\/h3>\r\n      <p>The gate is where MIM feedstock enters the mold cavity. Its location affects filling behavior, weld or knit line risk, surface quality, gate vestige, dimensional consistency, and whether functional or cosmetic surfaces are affected.<\/p>\r\n      <p>A gate should not be placed only where it is convenient for the mold. It should be reviewed against thick-to-thin flow path, visible surfaces, sealing surfaces, bearing surfaces, mating surfaces, inspection datums, and any post-processing allowance.<\/p>\r\n\r\n      <h3>Parting Line, Witness Marks, and Functional Surfaces<\/h3>\r\n      <p>The parting line is where mold sections meet. In many MIM parts, this line transfers to the part surface as a witness line. If the parting line crosses a sealing face, sliding contact surface, cosmetic face, or datum surface, it may create assembly, function, or inspection problems.<\/p>\r\n\r\n      <figure class=\"xtmim-figure\">\r\n        <img loading=\"lazy\" src=\"https:\/\/xtmim.com\/wp-content\/uploads\/2026\/05\/04-mim-gate-parting-line-risk.webp\" alt=\"MIM part surface diagram showing gate vestige, parting line witness mark, ejector mark, and protected functional surface before mold design.\" title=\"MIM Gate and Parting Line Surface Risk\" width=\"1600\" height=\"900\" loading=\"lazy\" decoding=\"async\">\r\n        <figcaption>Gate vestige, parting lines, witness marks, and ejector marks should be reviewed against functional and cosmetic surfaces before tooling.<\/figcaption>\r\n        <div class=\"xtmim-figure-note\"><strong>Core conclusion:<\/strong> Gate and parting line decisions directly affect assembly, sealing, appearance, inspection, and secondary finishing.<\/div>\r\n      <\/figure>\r\n\r\n      <p>For deeper tooling discussions, see <a href=\"https:\/\/xtmim.com\/mim-design-guide\/gate-design\/\">MIM Gate Design<\/a> and <a href=\"https:\/\/xtmim.com\/mim-design-guide\/mold-design\/\">MIM Mold Design<\/a>.<\/p>\r\n\r\n      <h3>Sintering Support and Distortion Risk<\/h3>\r\n      <p>MIM parts are not finished after injection molding. After binder removal, the brown part is fragile and then shrinks during high-temperature sintering. Unsupported spans, cantilevers, thin tips, asymmetric mass distribution, and unstable resting surfaces can increase distortion risk.<\/p>\r\n      <p>The real issue is not only whether the feature can be molded. It is how the part will rest, shrink, and remain dimensionally stable during sintering. This is why support strategy should be reviewed before the tooling layout is finalized.<\/p>\r\n\r\n      <figure class=\"xtmim-figure\">\r\n        <img loading=\"lazy\" src=\"https:\/\/xtmim.com\/wp-content\/uploads\/2026\/05\/05-mim-sintering-support-distortion.webp\" alt=\"Supported and unsupported MIM parts during sintering showing how support surfaces reduce sagging, warpage, and dimensional distortion.\" title=\"MIM Sintering Support and Distortion Control\" width=\"1600\" height=\"900\" loading=\"lazy\" decoding=\"async\">\r\n        <figcaption>Unsupported spans and asymmetric features can distort during sintering; support strategy should be reviewed before tooling.<\/figcaption>\r\n        <div class=\"xtmim-figure-note\"><strong>Core conclusion:<\/strong> MIM sintering support is a design issue, not only a production fixture issue.<\/div>\r\n      <\/figure>\r\n\r\n      <p>For detailed support planning, see <a href=\"https:\/\/xtmim.com\/mim-design-guide\/sintering-supports\/\">MIM Sintering Supports<\/a>.<\/p>\r\n\r\n      <h3>Shrinkage Compensation and Dimensional Strategy<\/h3>\r\n      <p>MIM uses fine metal powder mixed with binder to form feedstock. After injection molding, binder removal and sintering create significant shrinkage before the final dense metal part is achieved. This means the tool is not designed to make the final part size directly. The mold must compensate for expected shrinkage, and the final result depends on material, feedstock behavior, geometry, sintering support, furnace conditions, and inspection strategy.<\/p>\r\n      <p>A good drawing review should identify which dimensions are functional, which dimensions can remain as-sintered, which dimensions may require machining, where datums should be located, and which surfaces should avoid gate or parting line marks.<\/p>\r\n      <p>For detailed dimensional planning, see <a href=\"https:\/\/xtmim.com\/mim-design-guide\/shrinkage-compensation\/\">MIM Shrinkage Compensation<\/a>.<\/p>\r\n\r\n      <h3>Tolerance Requirements and Secondary Operations<\/h3>\r\n      <p>Tight tolerances should not be applied to every dimension by default. In MIM, unnecessary tight tolerances can increase inspection burden, secondary machining, tooling adjustments, sorting risk, and production cost.<\/p>\r\n\r\n      <div class=\"xtmim-table-wrap\">\r\n        <table>\r\n          <thead>\r\n            <tr>\r\n              <th>Tolerance group<\/th>\r\n              <th>Typical handling strategy<\/th>\r\n              <th>Design review question<\/th>\r\n            <\/tr>\r\n          <\/thead>\r\n          <tbody>\r\n            <tr>\r\n              <td>Non-critical dimensions<\/td>\r\n              <td>Usually suitable for normal as-sintered process control.<\/td>\r\n              <td>Does this dimension affect assembly, function, or inspection acceptance?<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Functional dimensions<\/td>\r\n              <td>May require tighter process control, datum planning, or dimensional study.<\/td>\r\n              <td>Is the tolerance realistic for the material, geometry, and sintering support plan?<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Critical dimensions<\/td>\r\n              <td>May require machining, sizing, grinding, lapping, or special inspection.<\/td>\r\n              <td>Is secondary operation allowed in cost, lead time, and part design?<\/td>\r\n            <\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n\r\n      <p>The engineering issue is not whether MIM can be precise. The issue is which dimensions truly need precision and how that precision will be achieved. For detailed guidance, see <a href=\"https:\/\/xtmim.com\/mim-design-guide\/mim-tolerances\/\">MIM Tolerances<\/a> and <a href=\"https:\/\/xtmim.com\/capabilities\/secondary-operations\/\">Secondary Operations<\/a>.<\/p>\r\n\r\n      <div class=\"xtmim-note\">\r\n        <strong>Need early design feedback?<\/strong> If your drawing includes thin walls, side holes, undercuts, tight tolerances, cosmetic surfaces, or unsupported features, submit the 2D drawing and 3D CAD file for a MIM DFM review before tooling. <a href=\"https:\/\/xtmim.com\/submit-drawing-for-review\/\">Submit your drawing for review<\/a>.\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"xtmim-section\" id=\"tooling-cost-risk\">\r\n    <div class=\"xtmim-wrap\">\r\n      <h2>How MIM Design Decisions Affect Tooling, Cost, and Production Risk<\/h2>\r\n      <p>Every design feature has a tooling, sintering, inspection, or post-processing consequence. A feature that removes machining may be valuable. A feature that forces complex tooling but does not affect function may increase cost without improving the part.<\/p>\r\n\r\n      <div class=\"xtmim-grid-2\">\r\n        <div class=\"xtmim-card\">\r\n          <h3>Mold Complexity and Moving Tool Features<\/h3>\r\n          <p>A through hole aligned with mold opening may be efficient. A side hole may need a slide. A complex internal undercut may require special tooling or may be better machined after sintering if the volume and tolerance justify it.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-card\">\r\n          <h3>Support Fixtures and Sintering Orientation<\/h3>\r\n          <p>Some parts look manufacturable from a molding view but become difficult during debinding or sintering. Thin cantilevers, unbalanced mass, unstable support faces, or sharp delicate tips may require custom setters or orientation control.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-card\">\r\n          <h3>Inspection and Machining Cost<\/h3>\r\n          <p>If a drawing includes many critical dimensions, tight tolerances on non-functional features, or unclear datums, the supplier may need more inspection steps, fixtures, or secondary operations.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-card\">\r\n          <h3>Design Changes That Reduce Secondary Operations<\/h3>\r\n          <p>Moving a non-critical hole direction, adding a support plane, relocating a gate, using ribs instead of solid thick sections, and reserving machining only for true critical interfaces can reduce production cost.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"xtmim-warning\">\r\n        <strong>Design-for-cost warning:<\/strong> Do not remove machining from the quote unless the design, tolerance, datum, and inspection strategy support as-sintered production. For detailed cost planning, see <a href=\"https:\/\/xtmim.com\/mim-design-guide\/design-for-cost\/\">MIM Design for Cost<\/a>.\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"xtmim-section\" id=\"when-reconsidered\">\r\n    <div class=\"xtmim-wrap\">\r\n      <h2>When MIM Design Should Be Reconsidered Before Tooling<\/h2>\r\n      <p>A good MIM design guide should also explain when the process should be questioned. MIM is powerful for small, complex, precision metal parts, but it is not the best route for every metal component. Before tooling, engineers should confirm whether the design can benefit from MIM without creating excessive tooling, sintering, tolerance, or secondary-operation risk.<\/p>\r\n\r\n      <div class=\"xtmim-table-wrap\">\r\n        <table>\r\n          <thead>\r\n            <tr>\r\n              <th>Condition to reconsider<\/th>\r\n              <th>Why it may be risky for MIM<\/th>\r\n              <th>Recommended action before tooling<\/th>\r\n            <\/tr>\r\n          <\/thead>\r\n          <tbody>\r\n            <tr>\r\n              <td>Large or simple geometry<\/td>\r\n              <td>MIM tooling and sintering shrinkage may not provide enough benefit over CNC, casting, stamping, or conventional PM.<\/td>\r\n              <td>Compare process economics before mold investment.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Very thick cross sections<\/td>\r\n              <td>Large mass concentration can increase debinding, cracking, shrinkage variation, and distortion risk.<\/td>\r\n              <td>Review coring, ribs, mass reduction, or alternative process routes.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Tight tolerances on nearly all dimensions<\/td>\r\n              <td>Over-tight tolerance requirements can force machining, sorting, and inspection cost across the whole part.<\/td>\r\n              <td>Separate critical functional dimensions from general as-sintered dimensions.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Flatness-critical thin plates or long unsupported arms<\/td>\r\n              <td>Unsupported areas can sag, warp, or shift during sintering.<\/td>\r\n              <td>Review support planes, setter strategy, part orientation, or geometry modification.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Very low annual volume<\/td>\r\n              <td>Tooling and development cost may be difficult to justify unless the part has strong technical value.<\/td>\r\n              <td>Compare prototype process, CNC bridge production, or delayed tooling strategy.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Features that still require heavy post-machining<\/td>\r\n              <td>If most critical surfaces must be machined after sintering, the MIM cost advantage may be reduced.<\/td>\r\n              <td>Keep MIM for complex near-net geometry and reserve machining for true critical interfaces.<\/td>\r\n            <\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n\r\n      <div class=\"xtmim-success\">\r\n        <strong>Engineering takeaway:<\/strong> MIM is strongest when complex geometry, material performance, part consolidation, and production volume work together. If the part needs extensive machining after sintering or has little geometry value, another process may be more practical.\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"xtmim-section\" id=\"review-matrix\">\r\n    <div class=\"xtmim-wrap\">\r\n      <h2>MIM Design Review Matrix: What to Check and Why It Matters<\/h2>\r\n      <p>This matrix converts design rules into an engineering review workflow. It helps product engineers and sourcing teams identify what should be checked before mold design, quotation, prototype trials, or mass production planning.<\/p>\r\n\r\n      <div class=\"xtmim-table-wrap\">\r\n        <table>\r\n          <thead>\r\n            <tr>\r\n              <th>Design factor<\/th>\r\n              <th>What engineers should check<\/th>\r\n              <th>Manufacturing risk if ignored<\/th>\r\n              <th>Recommended review action<\/th>\r\n            <\/tr>\r\n          <\/thead>\r\n          <tbody>\r\n            <tr>\r\n              <td>Wall thickness<\/td>\r\n              <td>Uniformity, thick sections, abrupt transitions, and local mass concentration.<\/td>\r\n              <td>Sink marks, voids, cracking, distortion, and non-uniform shrinkage.<\/td>\r\n              <td>Use coring, gradual transitions, ribs, or redesign.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Holes and slots<\/td>\r\n              <td>Direction, depth, core support, seal-off, and inspection access.<\/td>\r\n              <td>Slide cost, core breakage, flash, and machining need.<\/td>\r\n              <td>Align with mold opening where possible; review slide or machining strategy.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Undercuts<\/td>\r\n              <td>Internal vs external features, tool motion, and accessibility.<\/td>\r\n              <td>Complex tooling, flash, mold maintenance, and cost increase.<\/td>\r\n              <td>Avoid unnecessary internal undercuts or confirm tooling approach.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Gate location<\/td>\r\n              <td>Flow path, vestige location, functional surfaces, and cosmetic areas.<\/td>\r\n              <td>Surface marks, filling imbalance, short shot risk, and dimensional instability.<\/td>\r\n              <td>Place away from critical surfaces and support balanced filling.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Parting line<\/td>\r\n              <td>Witness mark location, mold split, feature orientation, and flash risk.<\/td>\r\n              <td>Flash, cosmetic defects, assembly interference, and inspection dispute.<\/td>\r\n              <td>Move the line to a non-critical edge or review machining allowance.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Sintering support<\/td>\r\n              <td>Resting face, long spans, cantilevers, mass balance, and setter contact.<\/td>\r\n              <td>Sagging, warpage, flatness issues, and custom setter cost.<\/td>\r\n              <td>Add a support plane or review setter requirement before tooling.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Shrinkage compensation<\/td>\r\n              <td>Material, geometry, support direction, and critical dimensions.<\/td>\r\n              <td>Final size drift, tolerance failure, and mold correction cost.<\/td>\r\n              <td>Define critical dimensions and shrinkage-sensitive areas before tooling.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Tolerances<\/td>\r\n              <td>Functional vs non-functional dimensions and datum structure.<\/td>\r\n              <td>Overinspection, machining cost, quote uncertainty, and delivery risk.<\/td>\r\n              <td>Separate as-sintered and machined dimensions.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Secondary operations<\/td>\r\n              <td>Machining, tapping, sizing, heat treatment, surface finishing, and cleaning.<\/td>\r\n              <td>Hidden cost, lead time increase, datum conflict, and process rework.<\/td>\r\n              <td>Confirm operations before quote and mold design.<\/td>\r\n            <\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n\r\n      <h3>Critical Features That Should Be Marked on the Drawing<\/h3>\r\n      <p>A MIM drawing should not treat every feature as equally important. Before DFM review, engineers should clearly mark critical dimensions, datum surfaces, sealing surfaces, sliding or bearing surfaces, cosmetic surfaces, thread requirements, heat treatment or hardness requirements, surface finish requirements, inspection methods, and no-gate or no-witness-line zones.<\/p>\r\n\r\n      <h3>How to Prioritize Issues Before Tooling<\/h3>\r\n      <ol>\r\n        <li>Features that affect mold release or tool motion.<\/li>\r\n        <li>Features that affect green part handling, debinding, sintering support, or distortion.<\/li>\r\n        <li>Dimensions that affect assembly, load transfer, movement, sealing, or function.<\/li>\r\n        <li>Surfaces that cannot accept gate, ejector, flash, or witness marks.<\/li>\r\n        <li>Features that may require secondary machining, sizing, tapping, or finishing.<\/li>\r\n        <li>Cosmetic preferences and non-critical appearance details.<\/li>\r\n      <\/ol>\r\n\r\n      <p>For a practical action list, see <a href=\"https:\/\/xtmim.com\/mim-checklist\/mim-dfm-design-checklist\/\">MIM DFM Design Checklist<\/a>.<\/p>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"xtmim-section\" id=\"design-mistakes\">\r\n    <div class=\"xtmim-wrap\">\r\n      <h2>Common MIM Design Mistakes That Should Be Fixed Before Tooling<\/h2>\r\n      <p>This section summarizes the highest-risk mistakes that usually create tooling changes, trial delays, or unnecessary secondary operations. Detailed examples should be reviewed in the dedicated <a href=\"https:\/\/xtmim.com\/mim-design-guide\/design-mistakes\/\">Common MIM Design Mistakes<\/a> page.<\/p>\r\n\r\n      <div class=\"xtmim-grid-2\">\r\n        <div class=\"xtmim-card\">\r\n          <h3>Treating MIM Like Plastic Injection Molding<\/h3>\r\n          <p>MIM uses injection molding, but the molded green part still needs debinding and sintering. Final dimensions depend on shrinkage compensation, material behavior, support strategy, and inspection planning.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-card\">\r\n          <h3>Ignoring Sintering Shrinkage and Support Direction<\/h3>\r\n          <p>A part that molds well may still distort during sintering if long unsupported features, asymmetrical mass, or unstable support surfaces are not reviewed early.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-card\">\r\n          <h3>Placing Gates or Parting Lines on Critical Surfaces<\/h3>\r\n          <p>Gate vestige and witness marks should not be placed on sealing, sliding, mating, datum, or cosmetic surfaces unless a post-process is planned and accepted.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-card\">\r\n          <h3>Over-Tightening Tolerances Without a Machining Strategy<\/h3>\r\n          <p>Critical tolerances should be tied to part function. Copying a CNC prototype drawing without tolerance review often creates unnecessary machining or inspection cost.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-card\">\r\n          <h3>Designing Holes Without Considering Tool Motion<\/h3>\r\n          <p>Side holes and internal undercuts may be possible, but they can increase tooling complexity and should be reviewed with mold direction, slides, core strength, and flash risk in mind.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-card\">\r\n          <h3>Not Marking Protected Surfaces<\/h3>\r\n          <p>If the drawing does not mark functional, cosmetic, or sealing surfaces, the tooling review may place gate, ejector, or witness marks in unacceptable areas.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"xtmim-section\" id=\"review-workflow\">\r\n    <div class=\"xtmim-wrap\">\r\n      <h2>MIM Design Review Workflow from Drawing to Production Planning<\/h2>\r\n      <p>A structured MIM design review connects drawing inputs with tooling strategy, sintering support, tolerance planning, prototype validation, and production preparation. The workflow should be completed before the mold concept is fixed, not after the first trial exposes avoidable risk.<\/p>\r\n\r\n      <div class=\"xtmim-steps\">\r\n        <div class=\"xtmim-step\">\r\n          <h3>Review Geometry and Feature Feasibility<\/h3>\r\n          <p>Check whether the part can be molded, released, handled, debound, sintered, and inspected. Do not stop at moldability.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-step\">\r\n          <h3>Check Wall Thickness and Mass Distribution<\/h3>\r\n          <p>Identify thick sections, abrupt transitions, isolated masses, and areas where coring, ribs, or gradual transitions could reduce risk.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-step\">\r\n          <h3>Evaluate Gate, Mold, and Parting Line Strategy<\/h3>\r\n          <p>Review gate location, parting line, ejector marks, slide directions, and whether functional surfaces are protected.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-step\">\r\n          <h3>Review Sintering Support and Shrinkage Compensation<\/h3>\r\n          <p>Confirm how the part will rest during sintering, which surfaces support the part, and whether critical dimensions may be affected by shrinkage direction or distortion.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-step\">\r\n          <h3>Define Critical Dimensions and Inspection Requirements<\/h3>\r\n          <p>Separate critical dimensions from general dimensions. Identify datums, functional surfaces, inspection methods, and secondary operation requirements.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-step\">\r\n          <h3>Decide Whether Secondary Operations Are Needed<\/h3>\r\n          <p>Reserve machining, grinding, sizing, tapping, or finishing for dimensions and surfaces that truly require it. The review should distinguish value-added operations from avoidable cost.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"xtmim-section\" id=\"composite-scenario\">\r\n    <div class=\"xtmim-wrap\">\r\n      <h2>Composite Field Scenario for Engineering Training<\/h2>\r\n      <p>The following scenario is a composite engineering example, not a named customer case. It shows how several small design decisions can combine into a production risk if they are not reviewed before tooling.<\/p>\r\n\r\n      <div class=\"xtmim-scenario\">\r\n        <h3>Thin Arm Distortion After Sintering<\/h3>\r\n        <p>A small MIM bracket included a thick mounting boss, a long thin arm, a side hole, and a flat datum surface. The CAD model looked suitable for MIM, but early review showed that the arm had limited support during sintering and the thick boss created uneven mass distribution.<\/p>\r\n\r\n        <div class=\"xtmim-scenario-grid\">\r\n          <div class=\"xtmim-scenario-item\">\r\n            <strong>What problem occurred<\/strong>\r\n            The long arm was likely to sag or shift during sintering, and the datum surface could lose flatness.\r\n          <\/div>\r\n          <div class=\"xtmim-scenario-item\">\r\n            <strong>Why it happened<\/strong>\r\n            The feature was moldable, but the design did not provide a stable sintering support surface.\r\n          <\/div>\r\n          <div class=\"xtmim-scenario-item\">\r\n            <strong>System cause<\/strong>\r\n            Tooling, wall thickness, sintering orientation, and datum strategy were reviewed separately instead of as one system.\r\n          <\/div>\r\n          <div class=\"xtmim-scenario-item\">\r\n            <strong>How it was corrected<\/strong>\r\n            The design added a support-friendly surface, softened the mass transition near the boss, and moved a non-critical surface away from the datum zone.\r\n          <\/div>\r\n          <div class=\"xtmim-scenario-item\">\r\n            <strong>How to prevent recurrence<\/strong>\r\n            Review support direction, datum surfaces, wall transitions, gate position, and tolerance class before mold design.\r\n          <\/div>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"xtmim-success\">\r\n        <strong>Engineering takeaway:<\/strong> A feature can be moldable and still be risky. In MIM design, tooling, debinding, sintering support, shrinkage, and inspection must be reviewed as one manufacturing system.\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"xtmim-section\" id=\"dfm-inputs\">\r\n    <div class=\"xtmim-wrap\">\r\n      <h2>What Information Should You Prepare for a MIM DFM Review?<\/h2>\r\n      <p>A useful MIM quote depends on drawing-based engineering review, not only part name or material name. The more clearly the user provides drawings, material requirements, critical dimensions, annual volume, and application background, the more accurately the supplier can review manufacturability, tooling risk, sintering behavior, tolerance feasibility, and production cost.<\/p>\r\n\r\n      <figure class=\"xtmim-figure\">\r\n        <img loading=\"lazy\" src=\"https:\/\/xtmim.com\/wp-content\/uploads\/2026\/05\/06-mim-dfm-review-input-checklist.webp\" alt=\"MIM DFM review input checklist showing 2D drawing, 3D CAD model, material requirement, critical dimensions, tolerances, surface finish, volume, and application background.\" title=\"MIM DFM Review Input Checklist\" width=\"1600\" height=\"900\" loading=\"lazy\" decoding=\"async\">\r\n        <figcaption>Complete DFM input helps the engineering team review manufacturability, tooling risk, shrinkage, tolerances, secondary operations, and inspection before RFQ.<\/figcaption>\r\n        <div class=\"xtmim-figure-note\"><strong>Core conclusion:<\/strong> Complete drawings and engineering requirements help the supplier identify risks before mold design and quotation.<\/div>\r\n      <\/figure>\r\n\r\n      <div class=\"xtmim-grid-2\">\r\n        <div class=\"xtmim-card\">\r\n          <h3>2D Drawing, 3D Model, and Revision Status<\/h3>\r\n          <p>Provide the latest 2D drawing and 3D CAD model. If the part is still in concept stage, mark the revision clearly and explain which dimensions are fixed and which can be adjusted.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-card\">\r\n          <h3>Material, Hardness, Surface, and Application Requirements<\/h3>\r\n          <p>Material selection affects sintering behavior, mechanical properties, corrosion resistance, heat treatment options, surface finish, and final inspection. If the material is not fixed, provide the application environment and performance requirements instead.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-card\">\r\n          <h3>Critical Dimensions and Functional Surfaces<\/h3>\r\n          <p>Mark the features that affect assembly, sealing, movement, wear, load transfer, or appearance. This helps the engineering team avoid placing gates, ejector marks, or witness lines in unacceptable locations.<\/p>\r\n        <\/div>\r\n        <div class=\"xtmim-card\">\r\n          <h3>Estimated Annual Volume and Target Production Stage<\/h3>\r\n          <p>MIM tooling and DFM decisions depend on whether the project is in concept validation, prototype transition, pilot production, or mass production planning.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"xtmim-table-wrap\">\r\n        <table>\r\n          <thead>\r\n            <tr>\r\n              <th>RFQ \/ DFM input<\/th>\r\n              <th>Why it matters<\/th>\r\n            <\/tr>\r\n          <\/thead>\r\n          <tbody>\r\n            <tr>\r\n              <td>2D drawing<\/td>\r\n              <td>Defines tolerances, datums, functional surfaces, and inspection expectations.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>3D CAD model<\/td>\r\n              <td>Supports feature, mold, tooling, wall thickness, and undercut review.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Material requirement<\/td>\r\n              <td>Affects shrinkage behavior, sintering, heat treatment, corrosion resistance, and performance.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Critical dimensions<\/td>\r\n              <td>Helps separate as-sintered dimensions from machined or specially inspected features.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Protected surfaces<\/td>\r\n              <td>Helps avoid gate vestige, ejector marks, flash, or witness marks on sealing, sliding, or cosmetic surfaces.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Surface finish requirement<\/td>\r\n              <td>Affects gate location, parting line planning, finishing, cleaning, and inspection planning.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Annual volume<\/td>\r\n              <td>Helps judge tooling economics, cavity strategy, inspection method, and production planning.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Application background<\/td>\r\n              <td>Helps evaluate load, wear, corrosion, movement, quality risk, and acceptance criteria.<\/td>\r\n            <\/tr>\r\n            <tr>\r\n              <td>Current manufacturing process<\/td>\r\n              <td>Helps identify whether MIM can reduce machining, assembly, part count, or tolerance stack-up.<\/td>\r\n            <\/tr>\r\n          <\/tbody>\r\n        <\/table>\r\n      <\/div>\r\n\r\n      <p>For material planning, see <a href=\"https:\/\/xtmim.com\/mim-materials\/\">MIM Materials<\/a>. For quotation preparation, see <a href=\"https:\/\/xtmim.com\/rfq-preparation-guide\/\">RFQ Preparation Guide<\/a>, <a href=\"https:\/\/xtmim.com\/submit-drawing-for-review\/\">Submit Drawing for Review<\/a>, or <a href=\"https:\/\/xtmim.com\/contact-us\/\">Contact Us<\/a>.<\/p>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"xtmim-section\" id=\"related-topics\">\r\n    <div class=\"xtmim-wrap\">\r\n      <h2>Explore Detailed MIM Design Topics<\/h2>\r\n      <p>Use this MIM design guide as the starting point. For detailed design decisions, review the related topic pages below. These pages handle deeper subtopics so this L2 page remains a clear design-review hub rather than a mixed long-form manual.<\/p>\r\n\r\n      <div class=\"xtmim-grid-3\">\r\n        <a class=\"xtmim-topic-card\" href=\"https:\/\/xtmim.com\/mim-design-guide\/part-design\/\">MIM Part Design <span>Review overall part geometry and MIM suitability.<\/span><\/a>\r\n        <a class=\"xtmim-topic-card\" href=\"https:\/\/xtmim.com\/mim-design-guide\/wall-thickness\/\">Wall Thickness Design <span>Review thick sections, thin walls, mass concentration, and abrupt transitions.<\/span><\/a>\r\n        <a class=\"xtmim-topic-card\" href=\"https:\/\/xtmim.com\/mim-design-guide\/holes-slots-undercuts\/\">Holes, Slots, and Undercuts <span>Review side holes, internal features, slots, core pins, and undercuts.<\/span><\/a>\r\n        <a class=\"xtmim-topic-card\" href=\"https:\/\/xtmim.com\/mim-design-guide\/mold-design\/\">MIM Mold Design <span>Review slides, inserts, parting lines, tool motion, and mold cost.<\/span><\/a>\r\n        <a class=\"xtmim-topic-card\" href=\"https:\/\/xtmim.com\/mim-design-guide\/gate-design\/\">MIM Gate Design <span>Review gate vestige, flow path, surface restrictions, and filling behavior.<\/span><\/a>\r\n        <a class=\"xtmim-topic-card\" href=\"https:\/\/xtmim.com\/mim-design-guide\/sintering-supports\/\">Sintering Supports <span>Review distortion, flatness, long spans, and setter requirements.<\/span><\/a>\r\n        <a class=\"xtmim-topic-card\" href=\"https:\/\/xtmim.com\/mim-design-guide\/shrinkage-compensation\/\">Shrinkage Compensation <span>Review final dimensions, mold compensation, and sintering risk.<\/span><\/a>\r\n        <a class=\"xtmim-topic-card\" href=\"https:\/\/xtmim.com\/mim-design-guide\/mim-tolerances\/\">MIM Tolerances <span>Review as-sintered dimensions, machined dimensions, datums, and inspection.<\/span><\/a>\r\n        <a class=\"xtmim-topic-card\" href=\"https:\/\/xtmim.com\/mim-design-guide\/dfm\/\">DFM for MIM <span>Review part manufacturability before tooling, prototype trials, and production planning.<\/span><\/a>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"xtmim-section\" id=\"drawing-review\">\r\n    <div class=\"xtmim-wrap\">\r\n      <div class=\"xtmim-cta\">\r\n        <h2>Submit Your Drawing for MIM DFM Review<\/h2>\r\n        <p>If your part includes complex geometry, thin walls, small holes, undercuts, tight tolerances, functional surfaces, cosmetic surfaces, or current machining cost concerns, XTMIM can review the design before tooling.<\/p>\r\n        <p>Please send your 2D drawing, 3D CAD file, material requirement, critical dimensions, tolerance needs, protected surface notes, surface finish requirements, estimated annual volume, and application background.<\/p>\r\n        <div class=\"xtmim-grid-2\">\r\n          <div>\r\n            <h3>Our engineering review will focus on:<\/h3>\r\n            <ul>\r\n              <li>MIM process suitability<\/li>\r\n              <li>Wall thickness and geometry risks<\/li>\r\n              <li>Gate and parting line concerns<\/li>\r\n              <li>Tooling complexity and feature direction<\/li>\r\n              <li>Sintering support and shrinkage risk<\/li>\r\n              <li>Tolerance and inspection requirements<\/li>\r\n              <li>Secondary machining, heat treatment, or finishing needs<\/li>\r\n            <\/ul>\r\n          <\/div>\r\n          <div>\r\n            <h3>Recommended next step<\/h3>\r\n            <p>This review can help identify design issues before mold fabrication, prototype trials, or production planning. It also helps clarify whether the part should be optimized for as-sintered production, selective machining, or another manufacturing route.<\/p>\r\n            <div class=\"xtmim-btns\">\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\/request-a-quote\/\">Request a Quote<\/a>\r\n              <a class=\"xtmim-btn xtmim-btn-secondary\" href=\"https:\/\/xtmim.com\/contact-us\/\">Contact Us<\/a>\r\n            <\/div>\r\n          <\/div>\r\n        <\/div>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"xtmim-section xtmim-faq\" id=\"faq\">\r\n    <div class=\"xtmim-wrap\">\r\n      <h2>FAQs About MIM Design Guidelines<\/h2>\r\n\r\n      <details>\r\n        <summary>What is a MIM design guide used for?<\/summary>\r\n        <p>A MIM design guide helps engineers review whether a metal part can be molded, debound, sintered, inspected, and produced consistently before tooling starts. It connects geometry, wall thickness, gates, parting lines, sintering support, shrinkage compensation, tolerances, and secondary operations into one DFM review.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>What is the most important rule in MIM part design?<\/summary>\r\n        <p>The most important rule is to design for the full MIM process, not only for injection molding. A part must be reviewed for mold release, green part handling, debinding, sintering shrinkage, support, dimensional stability, and inspection.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>Is MIM design the same as plastic injection molding design?<\/summary>\r\n        <p>No. MIM uses injection molding to form the green part, but the part still goes through debinding and sintering. Shrinkage compensation, support strategy, material behavior, and final inspection make MIM design different from plastic injection molding design.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>Can MIM produce holes, slots, and undercuts?<\/summary>\r\n        <p>Yes. MIM can produce holes, slots, and some undercuts, but feasibility depends on feature direction, tool motion, core pin support, seal-off design, flash risk, and cost. Holes aligned with the mold opening direction are usually easier than side holes or complex internal undercuts.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>Why does sintering support matter in MIM design?<\/summary>\r\n        <p>During sintering, the part shrinks and becomes sensitive to support conditions. Long spans, cantilevers, thin tips, and uneven mass distribution can increase distortion risk. A good MIM design should consider how the part will rest during sintering before the tooling design is finalized.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>How should tolerances be specified for MIM parts?<\/summary>\r\n        <p>Tolerances should be specified according to function. Non-critical dimensions can often remain as-sintered, while critical interfaces may need tighter process control, machining, grinding, or special inspection. Over-tightening all dimensions usually increases cost without improving function.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>When should MIM design be reconsidered before tooling?<\/summary>\r\n        <p>MIM design should be reconsidered when the part is large and simple, has very thick sections, requires tight tolerances on nearly all dimensions, has unsupported flatness-critical features, has very low annual volume, or still needs heavy machining after sintering. In these cases, CNC machining, casting, stamping, or conventional powder metallurgy may need to be compared before mold investment.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>What information should I provide for a MIM DFM review?<\/summary>\r\n        <p>Provide a 2D drawing, 3D CAD model, material requirement, critical dimensions, tolerance requirements, protected surface notes, surface finish needs, estimated annual volume, and application background. If the part is currently machined or assembled from multiple pieces, explain the current manufacturing problem.<\/p>\r\n      <\/details>\r\n\r\n      <details>\r\n        <summary>When should I contact a MIM supplier for design review?<\/summary>\r\n        <p>Contact a MIM supplier before tooling if the part has thin walls, complex features, undercuts, side holes, tight tolerances, functional surfaces, or cost reduction goals. Early DFM review can identify mold, gate, shrinkage, support, and machining risks before they become expensive tooling changes.<\/p>\r\n      <\/details>\r\n    <\/div>\r\n  <\/section>\r\n\r\n  <section class=\"xtmim-section\" id=\"engineering-review\">\r\n    <div class=\"xtmim-wrap\">\r\n      <h2>Engineering Review and Technical References<\/h2>\r\n\r\n      <div class=\"xtmim-author\">\r\n        <div class=\"xtmim-author-icon\">XT<\/div>\r\n        <div>\r\n          <h3>Reviewed by XTMIM Engineering Team<\/h3>\r\n          <p>This guide was prepared and reviewed from a metal injection molding engineering perspective, with attention to process suitability, material selection, DFM, tooling risk, gate and parting line planning, green part handling, debinding, sintering support, shrinkage compensation, tolerance strategy, secondary operations, inspection requirements, and production feasibility.<\/p>\r\n          <p class=\"xtmim-small\">The content supports early design and RFQ discussion. Final manufacturability, tolerance capability, material selection, and inspection planning should be confirmed through project-specific DFM review based on drawings, CAD files, material requirements, functional surfaces, and production volume.<\/p>\r\n        <\/div>\r\n      <\/div>\r\n\r\n      <div class=\"xtmim-note xtmim-standards\">\r\n        <h3>Standards and Technical Reference Note<\/h3>\r\n        <p>MIM design decisions should be supported by project-specific DFM review, supplier process knowledge, and relevant technical references. Association resources and standards can guide terminology, material expectations, design features, and review discipline, but they should not replace engineering evaluation of the actual drawing and application.<\/p>\r\n        <ul>\r\n          <li><a href=\"https:\/\/www.mimaweb.org\/DesignCenter\/ComplexDesignswithMIM.aspx\" target=\"_blank\" rel=\"nofollow noopener\">MIMA Design Center \u2013 Complex Designs with MIM<\/a>: useful for reviewing MIM design features such as cored holes, gates, parting lines, sintering support, thickness transitions, undercuts, and wall thickness.<\/li>\r\n          <li><a href=\"https:\/\/www.epma.com\/what-is-pm\/powder-metallurgy-process\/metal-injection-moulding-mim\/\" target=\"_blank\" rel=\"nofollow noopener\">EPMA \u2013 Metal Injection Moulding overview<\/a>: useful for understanding the MIM process route, fine powder use, complex part production, debinding, and sintering behavior.<\/li>\r\n          <li><a href=\"https:\/\/www.mpif.org\/Resources\/Standards.aspx\" target=\"_blank\" rel=\"nofollow noopener\">MPIF Standards \u2013 Standard 35-MIM<\/a>: useful as a material specification and property reference for common MIM materials. Final material selection should still be confirmed against the project drawing, application environment, and supplier process route.<\/li>\r\n          <li><a href=\"https:\/\/www.pim-international.com\/metal-injection-molding\/metal-and-ceramic-injection-moulding-a-guide-for-designers-and-end-users\/\" target=\"_blank\" rel=\"nofollow noopener\">PIM International \u2013 Guide for designers and end-users<\/a>: useful for understanding why design-stage decisions and vendor consultation affect successful MIM adoption.<\/li>\r\n        <\/ul>\r\n      <\/div>\r\n    <\/div>\r\n  <\/section>\r\n<\/article>\r\n\r\n<script type=\"application\/ld+json\">\r\n{\r\n  \"@context\": \"https:\/\/schema.org\",\r\n  \"@type\": \"TechArticle\",\r\n  \"headline\": \"Metal Injection Molding Design Guide for DFM Review\",\r\n  \"description\": \"A practical MIM design guide for reviewing part geometry, wall thickness, holes, slots, undercuts, gate location, parting line, sintering support, shrinkage compensation, tolerances, secondary operations, and DFM inputs before tooling.\",\r\n  \"url\": \"https:\/\/xtmim.com\/mim-design-guide\/\",\r\n  \"image\": [\r\n    \"https:\/\/xtmim.com\/wp-content\/uploads\/2026\/05\/01-mim-design-review-before-tooling.webp\",\r\n    \"https:\/\/xtmim.com\/wp-content\/uploads\/2026\/05\/02-mim-design-factor-review-matrix.webp\",\r\n    \"https:\/\/xtmim.com\/wp-content\/uploads\/2026\/05\/03-good-poor-mim-geometry-design.webp\",\r\n    \"https:\/\/xtmim.com\/wp-content\/uploads\/2026\/05\/04-mim-gate-parting-line-risk.webp\",\r\n    \"https:\/\/xtmim.com\/wp-content\/uploads\/2026\/05\/05-mim-sintering-support-distortion.webp\",\r\n    \"https:\/\/xtmim.com\/wp-content\/uploads\/2026\/05\/06-mim-dfm-review-input-checklist.webp\"\r\n  ],\r\n  \"author\": {\r\n    \"@type\": \"Organization\",\r\n    \"name\": \"XTMIM Engineering Team\",\r\n    \"url\": \"https:\/\/xtmim.com\/about-us\/\"\r\n  },\r\n  \"publisher\": {\r\n    \"@type\": \"Organization\",\r\n    \"name\": \"XTMIM\",\r\n    \"url\": \"https:\/\/xtmim.com\/\"\r\n  },\r\n  \"about\": [\r\n    \"Metal Injection Molding Design\",\r\n    \"MIM DFM Review\",\r\n    \"MIM Tooling\",\r\n    \"MIM Sintering Support\",\r\n    \"MIM Tolerances\",\r\n    \"MIM Shrinkage Compensation\"\r\n  ],\r\n  \"mainEntityOfPage\": {\r\n    \"@type\": \"WebPage\",\r\n    \"@id\": \"https:\/\/xtmim.com\/mim-design-guide\/\"\r\n  }\r\n}\r\n<\/script>\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 is a MIM design guide used for?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"A MIM design guide helps engineers review whether a metal part can be molded, debound, sintered, inspected, and produced consistently before tooling starts. It connects geometry, wall thickness, gates, parting lines, sintering support, shrinkage compensation, tolerances, and secondary operations into one DFM review.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What is the most important rule in MIM part design?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"The most important rule is to design for the full MIM process, not only for injection molding. A part must be reviewed for mold release, green part handling, debinding, sintering shrinkage, support, dimensional stability, and inspection.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Is MIM design the same as plastic injection molding design?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"No. MIM uses injection molding to form the green part, but the part still goes through debinding and sintering. Shrinkage compensation, support strategy, material behavior, and final inspection make MIM design different from plastic injection molding design.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Can MIM produce holes, slots, and undercuts?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Yes. MIM can produce holes, slots, and some undercuts, but feasibility depends on feature direction, tool motion, core pin support, seal-off design, flash risk, and cost. Holes aligned with the mold opening direction are usually easier than side holes or complex internal undercuts.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"Why does sintering support matter in MIM design?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"During sintering, the part shrinks and becomes sensitive to support conditions. Long spans, cantilevers, thin tips, and uneven mass distribution can increase distortion risk. A good MIM design should consider how the part will rest during sintering before the tooling design is finalized.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"How should tolerances be specified for MIM parts?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Tolerances should be specified according to function. Non-critical dimensions can often remain as-sintered, while critical interfaces may need tighter process control, machining, grinding, or special inspection. Over-tightening all dimensions usually increases cost without improving function.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"When should MIM design be reconsidered before tooling?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"MIM design should be reconsidered when the part is large and simple, has very thick sections, requires tight tolerances on nearly all dimensions, has unsupported flatness-critical features, has very low annual volume, or still needs heavy machining after sintering. In these cases, CNC machining, casting, stamping, or conventional powder metallurgy may need to be compared before mold investment.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"What information should I provide for a MIM DFM review?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Provide a 2D drawing, 3D CAD model, material requirement, critical dimensions, tolerance requirements, protected surface notes, surface finish needs, estimated annual volume, and application background. If the part is currently machined or assembled from multiple pieces, explain the current manufacturing problem.\"\r\n      }\r\n    },\r\n    {\r\n      \"@type\": \"Question\",\r\n      \"name\": \"When should I contact a MIM supplier for design review?\",\r\n      \"acceptedAnswer\": {\r\n        \"@type\": \"Answer\",\r\n        \"text\": \"Contact a MIM supplier before tooling if the part has thin walls, complex features, undercuts, side holes, tight tolerances, functional surfaces, or cost reduction goals. Early DFM review can identify mold, gate, shrinkage, support, and machining risks before they become expensive tooling changes.\"\r\n      }\r\n    }\r\n  ]\r\n}\r\n<\/script>\r\n\r\n<script type=\"application\/ld+json\">\r\n{\r\n  \"@context\": \"https:\/\/schema.org\",\r\n  \"@type\": \"BreadcrumbList\",\r\n  \"itemListElement\": [\r\n    {\r\n      \"@type\": \"ListItem\",\r\n      \"position\": 1,\r\n      \"name\": \"Home\",\r\n      \"item\": \"https:\/\/xtmim.com\/\"\r\n    },\r\n    {\r\n      \"@type\": \"ListItem\",\r\n      \"position\": 2,\r\n      \"name\": \"Metal Injection Molding\",\r\n      \"item\": \"https:\/\/xtmim.com\/metal-injection-molding\/\"\r\n    },\r\n    {\r\n      \"@type\": \"ListItem\",\r\n      \"position\": 3,\r\n      \"name\": \"MIM Design Guide\",\r\n      \"item\": \"https:\/\/xtmim.com\/mim-design-guide\/\"\r\n    }\r\n  ]\r\n}\r\n<\/script>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>MIM Design Guide: DFM Rules Before Tooling MIM Design Guide Metal Injection Molding Design Guide for DFM Review Before Tooling A practical MIM design guide helps product engineers decide whether a small, complex metal part can be molded, debound, sintered, inspected, and produced consistently before tooling investment. The key issue is not only whether the CAD model is possible. The part must also survive feedstock injection, green part handling, binder removal, sintering shrinkage, dimensional control, and final inspection. This page is useful when a part includes thin walls, side holes, slots, undercuts, fine features, gate-sensitive surfaces, tight tolerances, or current CNC cost problems. It helps engineering and sourcing teams identify&#8230;<\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-53542","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/xtmim.com\/ja\/wp-json\/wp\/v2\/pages\/53542","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xtmim.com\/ja\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/xtmim.com\/ja\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/xtmim.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xtmim.com\/ja\/wp-json\/wp\/v2\/comments?post=53542"}],"version-history":[{"count":4,"href":"https:\/\/xtmim.com\/ja\/wp-json\/wp\/v2\/pages\/53542\/revisions"}],"predecessor-version":[{"id":53546,"href":"https:\/\/xtmim.com\/ja\/wp-json\/wp\/v2\/pages\/53542\/revisions\/53546"}],"wp:attachment":[{"href":"https:\/\/xtmim.com\/ja\/wp-json\/wp\/v2\/media?parent=53542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}