{"id":5328,"date":"2025-12-09T01:32:43","date_gmt":"2025-12-09T01:32:43","guid":{"rendered":"https:\/\/weldomachining.com\/?page_id=5328"},"modified":"2026-08-03T09:20:06","modified_gmt":"2026-08-03T09:20:06","slug":"cnc-bearbeitung-fr4","status":"publish","type":"page","link":"https:\/\/weldomachining.com\/de\/cnc-machining-fr4\/","title":{"rendered":"FR4"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"5328\" class=\"elementor elementor-5328\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-942004d e-flex e-con-boxed e-con e-parent\" data-id=\"942004d\" 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-86bc776 elementor-widget elementor-widget-html\" data-id=\"86bc776\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t\n<style>\n.wfr4,.wfr4 *{box-sizing:border-box}.elementor .e-con:has(.wfr4){--width:100%!important;width:100%!important;max-width:none!important;padding-inline:0!important}.elementor .e-con-boxed:has(.wfr4)>.e-con-inner{--content-width:min(100%,1312px)!important;width:100%!important;max-width:1312px!important}.wfr4{width:calc(100% - 32px);max-width:1280px;margin:10px auto 12px;padding:10px;color:#344039;background:#eaf3ed;border-radius:22px;font-family:inherit}.wfr4__inner{padding:28px;background:#fffefa;border:1px solid #d5e3d9;border-radius:17px}.wfr4__eyebrow{margin-bottom:9px;color:#62806e;font-size:10px;font-weight:760;letter-spacing:.1em;text-transform:uppercase}.wfr4 h1,.wfr4 h2,.wfr4 h3,.wfr4 p{overflow-wrap:anywhere}.wfr4 h1{margin:0 0 12px;color:#2f3933;font-size:clamp(27px,3vw,36px);font-weight:770;line-height:1.13;letter-spacing:-.025em}.wfr4 h2{margin:0 0 9px;color:#334039;font-size:clamp(22px,2vw,28px);font-weight:760;line-height:1.18;letter-spacing:-.015em}.wfr4 h3{margin:0 0 6px;color:#3b4c42;font-size:14px;line-height:1.3}.wfr4 p{margin:0;color:#69766e;font-size:clamp(13px,1.1vw,15px);line-height:1.62}.wfr4 a{color:inherit}.wfr4__card{min-width:0;padding:15px;background:#f1f7f3;border:1px solid #d6e4da;border-radius:13px}.wfr4__button{display:inline-flex;align-items:center;justify-content:center;min-height:42px;margin-top:18px;padding:10px 18px;color:#fff!important;background:#668571;border-radius:9px;font-size:12px;font-weight:760;text-decoration:none!important;transition:.2s}.wfr4__button:hover{background:#557360;transform:translateY(-1px)}.wfr4.wfr4-hero{max-width:1500px;background:#e5f0e9}.wfr4-hero .wfr4__inner{display:grid;grid-template-columns:minmax(0,.78fr) minmax(0,1.22fr);gap:34px;align-items:center}.wfr4-hero__figure{display:grid;place-items:center;width:100%;max-width:520px;aspect-ratio:4\/3;margin:0 auto;padding:14px;background:linear-gradient(145deg,#f5faf6,#e1ede5);border:1px solid #d0e0d4;border-radius:15px}.wfr4-hero__figure img{display:block;width:100%!important;height:100%!important;object-fit:contain}.wfr4-hero__facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:17px}.wfr4-hero__fact{padding:11px;background:#eff6f1;border:1px solid #d5e3d9;border-radius:10px}.wfr4-hero__fact span{display:block;margin-bottom:3px;color:#738278;font-size:9px;font-weight:760;text-transform:uppercase;letter-spacing:.06em}.wfr4-hero__fact strong{color:#456050;font-size:12px}.wfr4-hero__processes{display:flex;flex-wrap:wrap;gap:6px;margin-top:12px}.wfr4-hero__processes a,.wfr4-hero__processes span{padding:6px 9px;color:#5b7062;background:#fff;border:1px solid #d7e3da;border-radius:999px;font-size:10px;font-weight:700;text-decoration:none}.wfr4-hero__note{margin-top:9px!important;font-size:10px!important}@media(max-width:850px){.wfr4-hero .wfr4__inner{grid-template-columns:1fr}.wfr4-hero__figure{order:2;max-width:480px}.wfr4-hero__facts{grid-template-columns:1fr}}\n@media(max-width:700px){.wfr4{width:calc(100% - 16px);padding:8px;border-radius:17px}.wfr4__inner{padding:22px 16px}.wfr4 h1{font-size:27px}.wfr4 h2{font-size:22px}}\n<\/style>\n<section class=\"wfr4 wfr4-hero\" aria-labelledby=\"wfr4-hero-title\"><div class=\"wfr4__inner\"><figure class=\"wfr4-hero__figure\"><img decoding=\"async\" src=\"https:\/\/weldomachining.com\/wp-content\/uploads\/2025\/12\/FR4-green-color-resin-glass-fiber-precision-part-1.webp\" alt=\"Green FR4 glass-fiber resin precision part\" fetchpriority=\"high\"><\/figure><div><div class=\"wfr4__eyebrow\">Glass-Epoxy Insulation Components<\/div><h1 id=\"wfr4-hero-title\">Custom CNC Machining FR4 Services<\/h1><p>Weldo machines FR4 laminate into electrical insulation plates, PCB fixtures, spacers, bushings and structural components for prototypes and production.<\/p><div class=\"wfr4-hero__facts\"><div class=\"wfr4-hero__fact\"><span>Standard Tolerance<\/span><strong>Typically \u00b10.01 mm<\/strong><\/div><div class=\"wfr4-hero__fact\"><span>High-Precision Review<\/span><strong>Up to \u00b10.005 mm*<\/strong><\/div><div class=\"wfr4-hero__fact\"><span>Production Range<\/span><strong>Prototype to Batch<\/strong><\/div><\/div><div class=\"wfr4-hero__processes\"><a href=\"https:\/\/weldomachining.com\/service\/cnc-milling\/\">CNC Milling<\/a><a href=\"https:\/\/weldomachining.com\/service\/cnc-turning\/\">CNC Turning<\/a><a href=\"https:\/\/weldomachining.com\/service\/grinding\/\">CNC Grinding<\/a><span>Drilling<\/span><span>Routing<\/span><\/div><a class=\"wfr4__button\" href=\"https:\/\/weldomachining.com\/file-upload\/\">Upload Your FR4 Drawing<\/a><p class=\"wfr4-hero__note\">*Tolerance depends on thickness, geometry, hole pattern, laminate quality and inspection conditions.<\/p><\/div><\/div><\/section>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4d9c8e7 elementor-widget elementor-widget-html\" data-id=\"4d9c8e7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t\n<style>\n.wfr4,.wfr4 *{box-sizing:border-box}.elementor .e-con:has(.wfr4){--width:100%!important;width:100%!important;max-width:none!important;padding-inline:0!important}.elementor .e-con-boxed:has(.wfr4)>.e-con-inner{--content-width:min(100%,1312px)!important;width:100%!important;max-width:1312px!important}.wfr4{width:calc(100% - 32px);max-width:1280px;margin:10px auto 12px;padding:10px;color:#344039;background:#eaf3ed;border-radius:22px;font-family:inherit}.wfr4__inner{padding:28px;background:#fffefa;border:1px solid #d5e3d9;border-radius:17px}.wfr4__eyebrow{margin-bottom:9px;color:#62806e;font-size:10px;font-weight:760;letter-spacing:.1em;text-transform:uppercase}.wfr4 h1,.wfr4 h2,.wfr4 h3,.wfr4 p{overflow-wrap:anywhere}.wfr4 h1{margin:0 0 12px;color:#2f3933;font-size:clamp(27px,3vw,36px);font-weight:770;line-height:1.13;letter-spacing:-.025em}.wfr4 h2{margin:0 0 9px;color:#334039;font-size:clamp(22px,2vw,28px);font-weight:760;line-height:1.18;letter-spacing:-.015em}.wfr4 h3{margin:0 0 6px;color:#3b4c42;font-size:14px;line-height:1.3}.wfr4 p{margin:0;color:#69766e;font-size:clamp(13px,1.1vw,15px);line-height:1.62}.wfr4 a{color:inherit}.wfr4__card{min-width:0;padding:15px;background:#f1f7f3;border:1px solid #d6e4da;border-radius:13px}.wfr4__button{display:inline-flex;align-items:center;justify-content:center;min-height:42px;margin-top:18px;padding:10px 18px;color:#fff!important;background:#668571;border-radius:9px;font-size:12px;font-weight:760;text-decoration:none!important;transition:.2s}.wfr4__button:hover{background:#557360;transform:translateY(-1px)}.wfr4-material__layout{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:20px;align-items:center}.wfr4-material__figure{display:grid;place-items:center;aspect-ratio:4\/3;margin:0;padding:12px;background:#edf5ef;border:1px solid #d4e2d8;border-radius:14px}.wfr4-material__figure img{display:block;width:100%!important;height:100%!important;object-fit:contain}.wfr4-material__grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:15px}.wfr4-material__card p{font-size:11px}.wfr4-material__note{margin-top:10px!important;padding:9px 11px;background:#e9f2ec;border-radius:8px;font-size:10.5px!important}.wfr4-material__note a{text-decoration:none;border-bottom:1px solid #9eb3a4}@media(max-width:800px){.wfr4-material__layout{grid-template-columns:1fr}}@media(max-width:480px){.wfr4-material__grid{grid-template-columns:1fr}}\n@media(max-width:700px){.wfr4{width:calc(100% - 16px);padding:8px;border-radius:17px}.wfr4__inner{padding:22px 16px}.wfr4 h1{font-size:27px}.wfr4 h2{font-size:22px}}\n<\/style>\n<section class=\"wfr4 wfr4-material\" aria-labelledby=\"wfr4-material-title\"><div class=\"wfr4__inner\"><div class=\"wfr4-material__layout\"><figure class=\"wfr4-material__figure\"><img decoding=\"async\" src=\"https:\/\/weldomachining.com\/wp-content\/uploads\/elementor\/thumbs\/fr4-material-board-rocz9c56d1j789bmatgdhshqq4w1wlnl1uwrmhl234.webp\" alt=\"Green FR4 glass-epoxy laminate board\" loading=\"lazy\"><\/figure><div><div class=\"wfr4__eyebrow\">Material Structure and Selection<\/div><h2 id=\"wfr4-material-title\">What Is FR4 Laminate?<\/h2><p>FR4 is a NEMA grade designation for woven-glass-reinforced epoxy laminate. It combines electrical insulation with mechanical strength and is commonly supplied as sheet or plate for machined components and PCB-related tooling.<\/p><div class=\"wfr4-material__grid\"><article class=\"wfr4__card wfr4-material__card\"><h3>Electrical Insulation<\/h3><p>Supports insulating plates, spacers, fixtures and high-voltage assemblies.<\/p><\/article><article class=\"wfr4__card wfr4-material__card\"><h3>Mechanical Support<\/h3><p>Glass reinforcement provides useful stiffness and strength for structural panels.<\/p><\/article><article class=\"wfr4__card wfr4-material__card\"><h3>Moisture Resistance<\/h3><p>Epoxy-glass construction offers relatively low moisture uptake for many electrical uses.<\/p><\/article><article class=\"wfr4__card wfr4-material__card\"><h3>Grade-Dependent Performance<\/h3><p>Dielectric, thermal, flame and chemical properties vary by supplier and grade.<\/p><\/article><\/div><p class=\"wfr4-material__note\">\u201cFR-4\u201d is a laminate grade\u2014not \u201cFlame Retardant Type 4.\u201d Confirm UL, Tg and <a href=\"https:\/\/weldomachining.com\/fr4-dielectric-constant\/\">dielectric requirements<\/a> from the selected material datasheet.<\/p><\/div><\/div><\/div><\/section>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0daa6f6 elementor-widget elementor-widget-html\" data-id=\"0daa6f6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<style>\n.wfr4-types,.wfr4-types *{box-sizing:border-box}\n.elementor .e-con:has(.wfr4-types){\n  --width:100%!important;\n  width:100%!important;\n  max-width:none!important;\n  padding-inline:0!important\n}\n.wfr4-types{\n  width:calc(100% - 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16px);padding:8px}\n  .wfr4-types__inner{padding:22px 16px}\n  .wfr4-types__grid{grid-template-columns:1fr}\n  .wfr4-types h2{font-size:22px}\n}\n<\/style>\n\n<section class=\"wfr4-types\" aria-labelledby=\"wfr4-types-title\">\n  <div class=\"wfr4-types__inner\">\n    <header class=\"wfr4-types__head\">\n      <div class=\"wfr4-types__eyebrow\">Material Selection<\/div>\n      <h2 id=\"wfr4-types-title\">FR4 Types for CNC Machining<\/h2>\n      <p class=\"wfr4-types__intro\">\n        Select the laminate grade by temperature, voltage, signal and compliance requirements.\n      <\/p>\n    <\/header>\n\n    <div class=\"wfr4-types__grid\">\n      <article class=\"wfr4-types__card\">\n        <span class=\"wfr4-types__icon\" aria-hidden=\"true\">STD<\/span>\n        <div>\n          <h3>Standard FR4<\/h3>\n          <p>Balanced insulation, strength and cost for general parts.<\/p>\n        <\/div>\n      <\/article>\n\n      <article class=\"wfr4-types__card\">\n        <span class=\"wfr4-types__icon\" aria-hidden=\"true\">HT<\/span>\n        <div>\n          <h3>High-Tg FR4<\/h3>\n          <p>Improved heat resistance and dimensional stability.<\/p>\n        <\/div>\n      <\/article>\n\n      <article class=\"wfr4-types__card\">\n        <span class=\"wfr4-types__icon\" aria-hidden=\"true\">HF<\/span>\n        <div>\n          <h3>Halogen-Free FR4<\/h3>\n          <p>For projects with restricted-halogen requirements.<\/p>\n        <\/div>\n      <\/article>\n\n      <article class=\"wfr4-types__card\">\n        <span class=\"wfr4-types__icon\" aria-hidden=\"true\">CTI<\/span>\n        <div>\n          <h3>High-CTI FR4<\/h3>\n          <p>Better tracking resistance for high-voltage assemblies.<\/p>\n        <\/div>\n      <\/article>\n\n      <article class=\"wfr4-types__card\">\n        <span class=\"wfr4-types__icon\" aria-hidden=\"true\">LL<\/span>\n        <div>\n          <h3>Low-Loss FR4<\/h3>\n          <p>Lower Dk and Df for high-frequency signal applications.<\/p>\n        <\/div>\n      <\/article>\n\n      <article class=\"wfr4-types__card\">\n        <span class=\"wfr4-types__icon\" aria-hidden=\"true\">CAF<\/span>\n        <div>\n          <h3>CAF-Resistant FR4<\/h3>\n          <p>Improved insulation reliability in humid, high-voltage use.<\/p>\n        <\/div>\n      <\/article>\n    <\/div>\n\n    <p class=\"wfr4-types__note\">\n      Confirm Tg, CTI, UL rating, dielectric data and thickness from the selected supplier\u2019s datasheet.\n    <\/p>\n  <\/div>\n<\/section>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b33767c elementor-widget elementor-widget-html\" data-id=\"b33767c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t\n<style>\n.wfr4,.wfr4 *{box-sizing:border-box}.elementor .e-con:has(.wfr4){--width:100%!important;width:100%!important;max-width:none!important;padding-inline:0!important}.elementor .e-con-boxed:has(.wfr4)>.e-con-inner{--content-width:min(100%,1312px)!important;width:100%!important;max-width:1312px!important}.wfr4{width:calc(100% - 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16px);padding:8px;border-radius:17px}.wfr4__inner{padding:22px 16px}.wfr4 h1{font-size:27px}.wfr4 h2{font-size:22px}}\n<\/style>\n<section class=\"wfr4 wfr4-cap\" aria-labelledby=\"wfr4-cap-title\"><div class=\"wfr4__inner\"><div class=\"wfr4-cap__layout\"><div><div class=\"wfr4__eyebrow\">Processes, Tolerances and Risk Control<\/div><h2 id=\"wfr4-cap-title\">FR4 CNC Machining Capabilities<\/h2><p>Tooling, feeds, support and dust extraction are selected to control edge fray, fiber pull-out, delamination and abrasive tool wear.<\/p><div class=\"wfr4-cap__processes\"><article class=\"wfr4__card wfr4-cap__process\"><h3><a href=\"https:\/\/weldomachining.com\/service\/cnc-milling\/\">CNC Milling<\/a><\/h3><p>Profiles, slots, pockets and multi-level insulation plates.<\/p><\/article><article class=\"wfr4__card wfr4-cap__process\"><h3><a href=\"https:\/\/weldomachining.com\/service\/cnc-turning\/\">CNC Turning<\/a><\/h3><p>Cylindrical spacers, sleeves, rings and bushings.<\/p><\/article><article class=\"wfr4__card wfr4-cap__process\"><h3><a href=\"https:\/\/weldomachining.com\/service\/grinding\/\">CNC Grinding<\/a><\/h3><p>Thickness, flatness and controlled surface refinement.<\/p><\/article><article class=\"wfr4__card wfr4-cap__process\"><h3>Drilling and Routing<\/h3><p>Hole patterns, contours and panel cut-outs with supported edges.<\/p><\/article><\/div><div class=\"wfr4-cap__tol\"><div><span>Standard<\/span><strong>\u00b10.10 mm<\/strong><\/div><div><span>Reviewed Precision<\/span><strong>Up to \u00b10.05 mm<\/strong><\/div><div><span>Quantity<\/span><strong>Prototype to Batch<\/strong><\/div><\/div><div class=\"wfr4-cap__risks\"><span>Abrasive Fiberglass<\/span><span>Dust Extraction<\/span><span>Delamination Control<\/span><span>Edge Quality<\/span><\/div><\/div><figure class=\"wfr4-cap__figure\"><img decoding=\"async\" src=\"https:\/\/weldomachining.com\/wp-content\/uploads\/2025\/12\/fr4-green-resin-glass-fiber-parts-1.webp\" alt=\"CNC-machined FR4 fiberglass resin parts\" loading=\"lazy\"><\/figure><\/div><\/div><\/section>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-add628a elementor-widget elementor-widget-html\" data-id=\"add628a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t\n<style>\n.wfr4,.wfr4 *{box-sizing:border-box}.elementor .e-con:has(.wfr4){--width:100%!important;width:100%!important;max-width:none!important;padding-inline:0!important}.elementor .e-con-boxed:has(.wfr4)>.e-con-inner{--content-width:min(100%,1312px)!important;width:100%!important;max-width:1312px!important}.wfr4{width:calc(100% - 32px);max-width:1280px;margin:10px auto 12px;padding:10px;color:#344039;background:#eaf3ed;border-radius:22px;font-family:inherit}.wfr4__inner{padding:28px;background:#fffefa;border:1px solid #d5e3d9;border-radius:17px}.wfr4__eyebrow{margin-bottom:9px;color:#62806e;font-size:10px;font-weight:760;letter-spacing:.1em;text-transform:uppercase}.wfr4 h1,.wfr4 h2,.wfr4 h3,.wfr4 p{overflow-wrap:anywhere}.wfr4 h1{margin:0 0 12px;color:#2f3933;font-size:clamp(27px,3vw,36px);font-weight:770;line-height:1.13;letter-spacing:-.025em}.wfr4 h2{margin:0 0 9px;color:#334039;font-size:clamp(22px,2vw,28px);font-weight:760;line-height:1.18;letter-spacing:-.015em}.wfr4 h3{margin:0 0 6px;color:#3b4c42;font-size:14px;line-height:1.3}.wfr4 p{margin:0;color:#69766e;font-size:clamp(13px,1.1vw,15px);line-height:1.62}.wfr4 a{color:inherit}.wfr4__card{min-width:0;padding:15px;background:#f1f7f3;border:1px solid #d6e4da;border-radius:13px}.wfr4__button{display:inline-flex;align-items:center;justify-content:center;min-height:42px;margin-top:18px;padding:10px 18px;color:#fff!important;background:#668571;border-radius:9px;font-size:12px;font-weight:760;text-decoration:none!important;transition:.2s}.wfr4__button:hover{background:#557360;transform:translateY(-1px)}.wfr4-parts__head{max-width:850px}.wfr4-parts__grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-top:18px}.wfr4-parts figure{min-width:0;margin:0;overflow:hidden;background:#f1f6f2;border:1px solid #d5e3d9;border-radius:12px}.wfr4-parts figure>div{display:grid;place-items:center;aspect-ratio:1\/1;padding:8px;background:linear-gradient(145deg,#f8fbf9,#e5efe8)}.wfr4-parts img{display:block;width:100%!important;height:100%!important;object-fit:contain}.wfr4-parts figcaption{padding:8px;color:#53675b;font-size:10px;font-weight:720;text-align:center}.wfr4-parts__chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:11px}.wfr4-parts__chips span{padding:6px 9px;color:#5c7063;background:#e8f1eb;border:1px solid #d5e2d8;border-radius:999px;font-size:10px;font-weight:700}@media(max-width:800px){.wfr4-parts__grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:480px){.wfr4-parts__grid{grid-template-columns:1fr}}\n@media(max-width:700px){.wfr4{width:calc(100% - 16px);padding:8px;border-radius:17px}.wfr4__inner{padding:22px 16px}.wfr4 h1{font-size:27px}.wfr4 h2{font-size:22px}}\n<\/style>\n<section class=\"wfr4 wfr4-parts\" aria-labelledby=\"wfr4-parts-title\"><div class=\"wfr4__inner\"><header class=\"wfr4-parts__head\"><div class=\"wfr4__eyebrow\">Part Examples and End Uses<\/div><h2 id=\"wfr4-parts-title\">Common CNC-Machined FR4 Components<\/h2><p>FR4 parts are selected where electrical insulation and structural support are required in the same component.<\/p><\/header><div class=\"wfr4-parts__grid\"><figure><div><img decoding=\"async\" src=\"https:\/\/weldomachining.com\/wp-content\/uploads\/elementor\/thumbs\/FR4-green-color-resin-glass-fiber-precision-part-5-rfvrio7d15jhiecq2wq3o550eh794m69s8rieycyhy.webp\" alt=\"FR4 Precision Component\" loading=\"lazy\"><\/div><figcaption>FR4 Precision Component<\/figcaption><\/figure><figure><div><img decoding=\"async\" src=\"https:\/\/weldomachining.com\/wp-content\/uploads\/2025\/12\/fr4.webp\" alt=\"FR4 Insulation Part\" loading=\"lazy\"><\/div><figcaption>FR4 Insulation Part<\/figcaption><\/figure><figure><div><img decoding=\"async\" src=\"https:\/\/weldomachining.com\/wp-content\/uploads\/2025\/12\/fr4-precision-parts-application.webp\" alt=\"FR4 Application Parts\" loading=\"lazy\"><\/div><figcaption>FR4 Application Parts<\/figcaption><\/figure><figure><div><img decoding=\"async\" src=\"https:\/\/weldomachining.com\/wp-content\/uploads\/elementor\/thumbs\/FR4-green-color-resin-glass-fiber-precision-part-11-rfvtltevecgziikemos84ltnksmfl2ehu4a9p51qcg.webp\" alt=\"Machined FR4 Plate\" loading=\"lazy\"><\/div><figcaption>Machined FR4 Plate<\/figcaption><\/figure><\/div><div class=\"wfr4-parts__chips\"><span>Insulation Plates<\/span><span>PCB Support Panels<\/span><span>Spacers and Washers<\/span><span>Transformer Components<\/span><span>Test Fixtures<\/span><span>Equipment Panels<\/span><span>Power Distribution<\/span><span>Renewable Energy<\/span><\/div><\/div><\/section>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-84d8e26 elementor-widget elementor-widget-html\" data-id=\"84d8e26\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t\n<style>\n.wfr4,.wfr4 *{box-sizing:border-box}.elementor .e-con:has(.wfr4){--width:100%!important;width:100%!important;max-width:none!important;padding-inline:0!important}.elementor .e-con-boxed:has(.wfr4)>.e-con-inner{--content-width:min(100%,1312px)!important;width:100%!important;max-width:1312px!important}.wfr4{width:calc(100% - 32px);max-width:1280px;margin:10px auto 12px;padding:10px;color:#344039;background:#eaf3ed;border-radius:22px;font-family:inherit}.wfr4__inner{padding:28px;background:#fffefa;border:1px solid #d5e3d9;border-radius:17px}.wfr4__eyebrow{margin-bottom:9px;color:#62806e;font-size:10px;font-weight:760;letter-spacing:.1em;text-transform:uppercase}.wfr4 h1,.wfr4 h2,.wfr4 h3,.wfr4 p{overflow-wrap:anywhere}.wfr4 h1{margin:0 0 12px;color:#2f3933;font-size:clamp(27px,3vw,36px);font-weight:770;line-height:1.13;letter-spacing:-.025em}.wfr4 h2{margin:0 0 9px;color:#334039;font-size:clamp(22px,2vw,28px);font-weight:760;line-height:1.18;letter-spacing:-.015em}.wfr4 h3{margin:0 0 6px;color:#3b4c42;font-size:14px;line-height:1.3}.wfr4 p{margin:0;color:#69766e;font-size:clamp(13px,1.1vw,15px);line-height:1.62}.wfr4 a{color:inherit}.wfr4__card{min-width:0;padding:15px;background:#f1f7f3;border:1px solid #d6e4da;border-radius:13px}.wfr4__button{display:inline-flex;align-items:center;justify-content:center;min-height:42px;margin-top:18px;padding:10px 18px;color:#fff!important;background:#668571;border-radius:9px;font-size:12px;font-weight:760;text-decoration:none!important;transition:.2s}.wfr4__button:hover{background:#557360;transform:translateY(-1px)}.wfr4-finish__head{max-width:850px}.wfr4-finish__grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin-top:18px}.wfr4-finish__card{border-top:3px solid #8baa95}.wfr4-finish__card p{font-size:11px}.wfr4-finish__card a{text-decoration:none;border-bottom:1px solid #9db4a4}.wfr4-finish__note{margin-top:10px!important;font-size:10.5px!important}@media(max-width:800px){.wfr4-finish__grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:480px){.wfr4-finish__grid{grid-template-columns:1fr}}\n@media(max-width:700px){.wfr4{width:calc(100% - 16px);padding:8px;border-radius:17px}.wfr4__inner{padding:22px 16px}.wfr4 h1{font-size:27px}.wfr4 h2{font-size:22px}}\n<\/style>\n<section class=\"wfr4 wfr4-finish\" aria-labelledby=\"wfr4-finish-title\"><div class=\"wfr4__inner\"><header class=\"wfr4-finish__head\"><div class=\"wfr4__eyebrow\">Edge Safety and Functional Finishing<\/div><h2 id=\"wfr4-finish-title\">Surface Finishes for Machined FR4<\/h2><p>Finishing focuses on clean edges, safe handling, identification and environmental protection.<\/p><\/header><div class=\"wfr4-finish__grid\"><article class=\"wfr4__card wfr4-finish__card\"><h3><a href=\"https:\/\/weldomachining.com\/deburring-in-machining\/\">Deburring and Sanding<\/a><\/h3><p>Removes sharp edges, loose fibers and machining burrs.<\/p><\/article><article class=\"wfr4__card wfr4-finish__card\"><h3>Precision Grinding<\/h3><p>Supports flatness, thickness and controlled mating surfaces.<\/p><\/article><article class=\"wfr4__card wfr4-finish__card\"><h3>Insulating Coating<\/h3><p>Selected epoxy or conformal coatings can improve moisture protection.<\/p><\/article><article class=\"wfr4__card wfr4-finish__card\"><h3>Marking and Bonding<\/h3><p>Laser marking, labels, tape or rubber pads support identification and assembly.<\/p><\/article><\/div><a class=\"wfr4__button\" href=\"https:\/\/weldomachining.com\/surface-finish\/\">View Surface Finish Options<\/a><p class=\"wfr4-finish__note\">FR4 is not anodized like aluminum. Coating, blasting and tumbling suitability must be confirmed against geometry and laminate construction.<\/p><\/div><\/section>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3e5ce01 elementor-widget elementor-widget-html\" data-id=\"3e5ce01\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t\n<style>\n.wfr4,.wfr4 *{box-sizing:border-box}.elementor .e-con:has(.wfr4){--width:100%!important;width:100%!important;max-width:none!important;padding-inline:0!important}.elementor .e-con-boxed:has(.wfr4)>.e-con-inner{--content-width:min(100%,1312px)!important;width:100%!important;max-width:1312px!important}.wfr4{width:calc(100% - 32px);max-width:1280px;margin:10px auto 12px;padding:10px;color:#344039;background:#eaf3ed;border-radius:22px;font-family:inherit}.wfr4__inner{padding:28px;background:#fffefa;border:1px solid #d5e3d9;border-radius:17px}.wfr4__eyebrow{margin-bottom:9px;color:#62806e;font-size:10px;font-weight:760;letter-spacing:.1em;text-transform:uppercase}.wfr4 h1,.wfr4 h2,.wfr4 h3,.wfr4 p{overflow-wrap:anywhere}.wfr4 h1{margin:0 0 12px;color:#2f3933;font-size:clamp(27px,3vw,36px);font-weight:770;line-height:1.13;letter-spacing:-.025em}.wfr4 h2{margin:0 0 9px;color:#334039;font-size:clamp(22px,2vw,28px);font-weight:760;line-height:1.18;letter-spacing:-.015em}.wfr4 h3{margin:0 0 6px;color:#3b4c42;font-size:14px;line-height:1.3}.wfr4 p{margin:0;color:#69766e;font-size:clamp(13px,1.1vw,15px);line-height:1.62}.wfr4 a{color:inherit}.wfr4__card{min-width:0;padding:15px;background:#f1f7f3;border:1px solid #d6e4da;border-radius:13px}.wfr4__button{display:inline-flex;align-items:center;justify-content:center;min-height:42px;margin-top:18px;padding:10px 18px;color:#fff!important;background:#668571;border-radius:9px;font-size:12px;font-weight:760;text-decoration:none!important;transition:.2s}.wfr4__button:hover{background:#557360;transform:translateY(-1px)}.wfr4-quality__layout{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:17px;align-items:start}.wfr4-quality__facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:15px}.wfr4-quality__fact p{font-size:11px}.wfr4-quality__gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.wfr4-quality figure{margin:0;overflow:hidden;background:#f1f6f2;border:1px solid #d5e3d9;border-radius:11px}.wfr4-quality figure img{display:block;width:100%!important;aspect-ratio:4\/3;object-fit:contain}.wfr4-quality figcaption{padding:7px;color:#566a5d;font-size:9.5px;font-weight:700;text-align:center}@media(max-width:800px){.wfr4-quality__layout{grid-template-columns:1fr}}@media(max-width:480px){.wfr4-quality__facts{grid-template-columns:1fr}}\n@media(max-width:700px){.wfr4{width:calc(100% - 16px);padding:8px;border-radius:17px}.wfr4__inner{padding:22px 16px}.wfr4 h1{font-size:27px}.wfr4 h2{font-size:22px}}\n<\/style>\n<section class=\"wfr4 wfr4-quality\" aria-labelledby=\"wfr4-quality-title\"><div class=\"wfr4__inner\"><div class=\"wfr4-quality__layout\"><div><div class=\"wfr4__eyebrow\">Production and Quality Control<\/div><h2 id=\"wfr4-quality-title\">Why Work With Weldo for FR4?<\/h2><p>FR4 projects are reviewed for laminate grade, fiber direction, tooling access, edge quality, tolerance and inspection requirements before machining.<\/p><div class=\"wfr4-quality__facts\"><article class=\"wfr4__card wfr4-quality__fact\"><h3>60+ Machines<\/h3><p>Multi-axis CNC, turning, grinding and supporting processes for prototype-to-batch work.<\/p><\/article><article class=\"wfr4__card wfr4-quality__fact\"><h3>DFM Support<\/h3><p>Hole spacing, internal radii, wall sections and delamination risks are reviewed.<\/p><\/article><article class=\"wfr4__card wfr4-quality__fact\"><h3>Inspection Capability<\/h3><p>CMM and dimensional tools support controlled inspection; 0.001 mm refers to equipment resolution.<\/p><\/article><article class=\"wfr4__card wfr4-quality__fact\"><h3>Published Lead Times<\/h3><p>Samples from 1 day and production from 3\u201315 days, subject to project review.<\/p><\/article><\/div><\/div><div class=\"wfr4-quality__gallery\"><figure><img decoding=\"async\" src=\"https:\/\/weldomachining.com\/wp-content\/uploads\/elementor\/thumbs\/5-axis-machining--rnq7erev995ngeeyg6vl67336whnepyi40c19jq360.webp\" alt=\"Multi-Axis Machining\" loading=\"lazy\"><figcaption>Multi-Axis Machining<\/figcaption><\/figure><figure><img decoding=\"async\" src=\"https:\/\/weldomachining.com\/wp-content\/uploads\/elementor\/thumbs\/size-testing-rnq7fob7wgeoqr36433j3gs7zdzhw4l3wj6128db48.webp\" alt=\"In-Process Measurement\" loading=\"lazy\"><figcaption>In-Process Measurement<\/figcaption><\/figure><figure><img decoding=\"async\" src=\"https:\/\/weldomachining.com\/wp-content\/uploads\/elementor\/thumbs\/CMM-test-center-rnq7escpg36xs0dlapa7qoujsad0mf28g4ziqtoozs.webp\" alt=\"CMM Inspection\" loading=\"lazy\"><figcaption>CMM Inspection<\/figcaption><\/figure><figure><img decoding=\"async\" src=\"https:\/\/weldomachining.com\/wp-content\/uploads\/elementor\/thumbs\/Pre-shipment-inspection-rnq7ezveyrh8cw2o2sj8amy8jdbybzw3567el1djm0.webp\" alt=\"Pre-Shipment Inspection\" loading=\"lazy\"><figcaption>Pre-Shipment Inspection<\/figcaption><\/figure><\/div><\/div><\/div><\/section>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-90e6234 elementor-widget elementor-widget-html\" data-id=\"90e6234\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t\n<style>\n.wfr4,.wfr4 *{box-sizing:border-box}.elementor .e-con:has(.wfr4){--width:100%!important;width:100%!important;max-width:none!important;padding-inline:0!important}.elementor .e-con-boxed:has(.wfr4)>.e-con-inner{--content-width:min(100%,1312px)!important;width:100%!important;max-width:1312px!important}.wfr4{width:calc(100% - 32px);max-width:1280px;margin:10px auto 12px;padding:10px;color:#344039;background:#eaf3ed;border-radius:22px;font-family:inherit}.wfr4__inner{padding:28px;background:#fffefa;border:1px solid #d5e3d9;border-radius:17px}.wfr4__eyebrow{margin-bottom:9px;color:#62806e;font-size:10px;font-weight:760;letter-spacing:.1em;text-transform:uppercase}.wfr4 h1,.wfr4 h2,.wfr4 h3,.wfr4 p{overflow-wrap:anywhere}.wfr4 h1{margin:0 0 12px;color:#2f3933;font-size:clamp(27px,3vw,36px);font-weight:770;line-height:1.13;letter-spacing:-.025em}.wfr4 h2{margin:0 0 9px;color:#334039;font-size:clamp(22px,2vw,28px);font-weight:760;line-height:1.18;letter-spacing:-.015em}.wfr4 h3{margin:0 0 6px;color:#3b4c42;font-size:14px;line-height:1.3}.wfr4 p{margin:0;color:#69766e;font-size:clamp(13px,1.1vw,15px);line-height:1.62}.wfr4 a{color:inherit}.wfr4__card{min-width:0;padding:15px;background:#f1f7f3;border:1px solid #d6e4da;border-radius:13px}.wfr4__button{display:inline-flex;align-items:center;justify-content:center;min-height:42px;margin-top:18px;padding:10px 18px;color:#fff!important;background:#668571;border-radius:9px;font-size:12px;font-weight:760;text-decoration:none!important;transition:.2s}.wfr4__button:hover{background:#557360;transform:translateY(-1px)}.wfr4-faq__head{max-width:850px}.wfr4-faq__list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:18px}.wfr4-faq details{min-width:0;background:#f1f7f3;border:1px solid #d6e4da;border-radius:11px}.wfr4-faq summary{position:relative;padding:13px 38px 13px 14px;color:#405447;font-size:12px;font-weight:740;line-height:1.4;cursor:pointer;list-style:none}.wfr4-faq summary::-webkit-details-marker{display:none}.wfr4-faq summary:after{content:'+';position:absolute;right:14px;top:11px;color:#6e8a77;font-size:18px}.wfr4-faq details[open] summary:after{content:'\u2013'}.wfr4-faq details>div{padding:0 14px 13px}.wfr4-faq details p{font-size:11.5px}@media(max-width:700px){.wfr4-faq__list{grid-template-columns:1fr}}\n@media(max-width:700px){.wfr4{width:calc(100% - 16px);padding:8px;border-radius:17px}.wfr4__inner{padding:22px 16px}.wfr4 h1{font-size:27px}.wfr4 h2{font-size:22px}}\n<\/style>\n<section class=\"wfr4 wfr4-faq\" aria-labelledby=\"wfr4-faq-title\"><div class=\"wfr4__inner\"><header class=\"wfr4-faq__head\"><div class=\"wfr4__eyebrow\">FR4 Machining FAQ<\/div><h2 id=\"wfr4-faq-title\">Frequently Asked Questions<\/h2><p>Concise guidance on accuracy, tool wear, insulation, flame rating and alternative laminate materials.<\/p><\/header><div class=\"wfr4-faq__list\"><details open><summary>Is FR4 suitable for precision CNC machining?<\/summary><div><p>Yes. With abrasion-resistant tooling, supported edges, controlled feeds and effective dust extraction, FR4 can achieve clean features and stable dimensions.<\/p><\/div><\/details><details><summary>Does machining FR4 cause excessive tool wear?<\/summary><div><p>FR4 is abrasive because of its glass reinforcement. Tool material, geometry, cutting parameters and inspection intervals must account for wear.<\/p><\/div><\/details><details><summary>Can FR4 be used for high-voltage insulation parts?<\/summary><div><p>Often yes, but voltage, creepage, clearance, thickness, dielectric properties and certification must be validated for the specific grade and assembly.<\/p><\/div><\/details><details><summary>Is every FR4 sheet UL94 V-0 certified?<\/summary><div><p>No. Flame performance and certification depend on the exact manufacturer, grade and thickness. Request the relevant datasheet and certification.<\/p><\/div><\/details><details><summary>What is the difference between FR4 and G10?<\/summary><div><p>Both are glass-epoxy laminates, but FR4 grades include flame-retardant requirements. Confirm the exact NEMA grade and supplier specification.<\/p><\/div><\/details><details><summary>How does FR4 compare with phenolic laminate?<\/summary><div><p>FR4 generally offers stronger electrical and mechanical performance, while phenolic grades may be selected for cost, machinability or application-specific behavior.<\/p><\/div><\/details><\/div><p style=\"margin-top:10px;font-size:10.5px\">References: <a href=\"https:\/\/en.wikipedia.org\/wiki\/G-10_(material)\" target=\"_blank\" rel=\"noopener noreferrer\">G10<\/a> and <a href=\"https:\/\/en.wikipedia.org\/wiki\/Phenolic\" target=\"_blank\" rel=\"noopener noreferrer\">phenolic resin<\/a>.<\/p><\/div><\/section>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4a0460e elementor-widget elementor-widget-html\" data-id=\"4a0460e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t\n<style>\n.wfr4,.wfr4 *{box-sizing:border-box}.elementor .e-con:has(.wfr4){--width:100%!important;width:100%!important;max-width:none!important;padding-inline:0!important}.elementor .e-con-boxed:has(.wfr4)>.e-con-inner{--content-width:min(100%,1312px)!important;width:100%!important;max-width:1312px!important}.wfr4{width:calc(100% - 32px);max-width:1280px;margin:10px auto 12px;padding:10px;color:#344039;background:#eaf3ed;border-radius:22px;font-family:inherit}.wfr4__inner{padding:28px;background:#fffefa;border:1px solid #d5e3d9;border-radius:17px}.wfr4__eyebrow{margin-bottom:9px;color:#62806e;font-size:10px;font-weight:760;letter-spacing:.1em;text-transform:uppercase}.wfr4 h1,.wfr4 h2,.wfr4 h3,.wfr4 p{overflow-wrap:anywhere}.wfr4 h1{margin:0 0 12px;color:#2f3933;font-size:clamp(27px,3vw,36px);font-weight:770;line-height:1.13;letter-spacing:-.025em}.wfr4 h2{margin:0 0 9px;color:#334039;font-size:clamp(22px,2vw,28px);font-weight:760;line-height:1.18;letter-spacing:-.015em}.wfr4 h3{margin:0 0 6px;color:#3b4c42;font-size:14px;line-height:1.3}.wfr4 p{margin:0;color:#69766e;font-size:clamp(13px,1.1vw,15px);line-height:1.62}.wfr4 a{color:inherit}.wfr4__card{min-width:0;padding:15px;background:#f1f7f3;border:1px solid #d6e4da;border-radius:13px}.wfr4__button{display:inline-flex;align-items:center;justify-content:center;min-height:42px;margin-top:18px;padding:10px 18px;color:#fff!important;background:#668571;border-radius:9px;font-size:12px;font-weight:760;text-decoration:none!important;transition:.2s}.wfr4__button:hover{background:#557360;transform:translateY(-1px)}.wfr4.wfr4-cta{background:#e3efe7}.wfr4-cta .wfr4__inner{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(260px,.7fr);gap:22px;align-items:center}.wfr4-cta__steps{display:grid;gap:7px}.wfr4-cta__step{display:flex;align-items:center;gap:10px;padding:10px 12px;background:#eef5f0;border:1px solid #d5e2d8;border-radius:10px}.wfr4-cta__step span{display:grid;place-items:center;flex:0 0 26px;height:26px;color:#fff;background:#6d8976;border-radius:7px;font-size:10px;font-weight:800}.wfr4-cta__step strong{color:#4d6255;font-size:11px}.wfr4-cta__step a{color:inherit!important;text-decoration:none!important}@media(max-width:750px){.wfr4-cta .wfr4__inner{grid-template-columns:1fr}}\n@media(max-width:700px){.wfr4{width:calc(100% - 16px);padding:8px;border-radius:17px}.wfr4__inner{padding:22px 16px}.wfr4 h1{font-size:27px}.wfr4 h2{font-size:22px}}\n<\/style>\n<section class=\"wfr4 wfr4-cta\" aria-labelledby=\"wfr4-cta-title\"><div class=\"wfr4__inner\"><div><div class=\"wfr4__eyebrow\">Start Your FR4 Project<\/div><h2 id=\"wfr4-cta-title\">Send Your Drawing for DFM Review<\/h2><p>Upload the model and drawing with laminate grade, thickness, quantity, critical tolerances, flame or dielectric requirements and required documentation.<\/p><a class=\"wfr4__button\" href=\"https:\/\/weldomachining.com\/file-upload\/\">Upload FR4 CAD Files<\/a><\/div><div class=\"wfr4-cta__steps\"><div class=\"wfr4-cta__step\"><span>1<\/span><strong>Upload <a href=\"https:\/\/en.wikipedia.org\/wiki\/ISO_10303-21\" target=\"_blank\" rel=\"noopener noreferrer\">STEP<\/a>, IGES, STL or Drawing<\/strong><\/div><div class=\"wfr4-cta__step\"><span>2<\/span><strong>Confirm Grade, Thickness and Quantity<\/strong><\/div><div class=\"wfr4-cta__step\"><span>3<\/span><strong>Receive DFM Feedback and Quote<\/strong><\/div><\/div><\/div><\/section>\n\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","protected":false},"excerpt":{"rendered":"<p>Glass-Epoxy Insulation Components Custom CNC Machining FR4 Services Weldo machines FR4 laminate into electrical insulation plates, PCB fixtures, spacers, bushings and structural components for prototypes and production. Standard ToleranceTypically \u00b10.01 mmHigh-Precision ReviewUp to \u00b10.005 mm*Production RangePrototype to BatchCNC MillingCNC TurningCNC GrindingDrillingRoutingUpload Your FR4 Drawing *Tolerance depends on thickness, geometry, hole pattern, laminate quality and inspection [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":5336,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-5328","page","type-page","status-publish","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/weldomachining.com\/de\/wp-json\/wp\/v2\/pages\/5328","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/weldomachining.com\/de\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/weldomachining.com\/de\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/weldomachining.com\/de\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/weldomachining.com\/de\/wp-json\/wp\/v2\/comments?post=5328"}],"version-history":[{"count":87,"href":"https:\/\/weldomachining.com\/de\/wp-json\/wp\/v2\/pages\/5328\/revisions"}],"predecessor-version":[{"id":12838,"href":"https:\/\/weldomachining.com\/de\/wp-json\/wp\/v2\/pages\/5328\/revisions\/12838"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/weldomachining.com\/de\/wp-json\/wp\/v2\/media\/5336"}],"wp:attachment":[{"href":"https:\/\/weldomachining.com\/de\/wp-json\/wp\/v2\/media?parent=5328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}