{"id":52387,"date":"2026-04-03T20:00:00","date_gmt":"2026-04-03T12:00:00","guid":{"rendered":"https:\/\/zetarmold.com\/?p=52387"},"modified":"2026-04-14T16:08:31","modified_gmt":"2026-04-14T08:08:31","slug":"spuitgieten-vs-cnc-bewerking","status":"publish","type":"post","link":"https:\/\/zetarmold.com\/nl\/spuitgieten-vs-cnc-bewerking\/","title":{"rendered":"Injection Molding vs CNC Machining Guide"},"content":{"rendered":"<div class=\"callout-key\" style=\"background:#f0f7ff; border-left:4px solid #2563eb; padding:1em 1.2em; border-radius:6px; margin:1.5em 0;\">\n<strong>Belangrijkste opmerkingen<\/strong><\/p>\n<p>  4\u201312 weken (eerste deel) <a href=\"https:\/\/zetarmold.com\/nl\/injection-mold-complete-guide\/\">Injection Mold Complete Guide<\/a>.<\/p>\n<ul>\n<li>Injection molding excels at high volumes (10,000+ parts); CNC machining is better for low volumes and prototypes.<\/li>\n<li>CNC machining tolerances reach \u00b10.005 mm; injection molding typically achieves \u00b10.05\u20130.3 mm.<\/li>\n<li>Injection molding supports a limited range of plastics; CNC machining works with metals, plastics, composites, and ceramics.<\/li>\n<li>Tooling cost for injection molding is $5,000\u2013$100,000; CNC machining requires no dedicated tooling per part.<\/li>\n<li>The crossover point where injection molding becomes cheaper than CNC machining typically falls at 1,000\u20135,000 parts.<\/li>\n<\/ul>\n<\/div>\n<h2>Injection Molding vs CNC Machining: Which Should You Choose?<\/h2>\n<p>Choose injection molding when production volume exceeds 10,000 parts per year, the material is a thermoplastic or thermoset, and part geometry conforms to molding design rules (uniform wall thickness, adequate draft). Choose <a href=\"https:\/\/zetarmold.com\/nl\/services\/cnc-verspaning\/\">CNC-bewerking<\/a> when volume is below 1,000 parts, <sup id=\"fnref1:2\"><a href=\"#fn:2\" class=\"footnote-ref\">2<\/a><\/sup> tighter than \u00b10.05 mm are required, the material is metal, or rapid iteration between design versions is needed.<\/p>\n<p>In our factory, we evaluate both processes for every new project. The correct answer depends on five variables: production volume, material, geometry complexity, tolerance requirements, and time-to-first-part. We see many products start with CNC machining for prototyping and engineering validation, then transition to injection molding at production scale\u2014this hybrid approach extracts the best of both processes.<\/p>\n<figure style=\"text-align:center;margin:2em 0;\">\n<img decoding=\"async\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/02\/800x457_robotic-arm-machining-part.webp\" alt=\"Robotic arm machining a plastic part\" style=\"max-width:100%;height:auto;\" \/><figcaption style=\"font-size:0.78em; color:#888; font-style:italic; margin-top:4px; text-align:center;\">CNC machining plastic component<\/figcaption><\/figure>\n<h2>How Do Injection Molding and CNC Machining Compare on Cost?<\/h2>\n<p>Injection molding has high fixed costs (tooling: $5,000\u2013$100,000) and low variable costs ($0.05\u2013$5.00 per part at production volume). CNC machining has zero fixed costs but high variable costs ($5\u2013$500+ per part depending on geometry and material). The crossover point where injection molding becomes cheaper typically falls at 1,000\u201310,000 parts, depending on part complexity and mold cost.<\/p>\n<p><sup id=\"fnref1:3\"><a href=\"#fn:3\" class=\"footnote-ref\">3<\/a><\/sup> of tooling cost is the central economic driver. A $20,000 mold producing 100,000 parts adds only $0.20 per part to tooling cost. The same $20,000 mold producing only 1,000 parts adds $20 per part\u2014making CNC-machined parts at $15 each far more economical. Engineers must always calculate tooling amortization before committing to either process.<\/p>\n<p>Secondary costs also differ significantly. Injection molded parts often need no secondary operations\u2014flash trimming, surface treatment, and assembly features are built into the mold. CNC machined parts frequently require deburring, thread tapping, surface finishing, and heat treatment. These secondary operations add $2\u2013$50 per part depending on part complexity and finishing requirements. For high-volume production, the absence of secondary operations in injection molding is a significant cost advantage.<\/p>\n<p>Material cost is another differentiator. Injection molding uses plastic pellets at $1\u2013$10 per kg. CNC machining of metals uses aluminum bar stock at $3\u2013$8 per kg, but material utilization is only 30\u201370%\u2014the rest becomes chips. Injection molding has near-zero material waste (apart from sprue and runner in cold runner systems). Over a production run of 500,000 parts, this material efficiency difference compounds substantially.<\/p>\n<div class=\"claim claim-true\" style=\"background-color: #eff7ef; border-color: #eff7ef; color: #5a8a5a;\">\n<p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#16a34a\" stroke-width=\"2\"><path d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><b>\u201cInjection molding becomes more cost-effective than CNC machining at volumes above 10,000 parts.\u201d<\/b><span class=\"claim-true-or-false\">Echt<\/span><\/p>\n<p class=\"claim-explanation\">At high volumes, mold tooling cost amortizes to fractions of a dollar per part, and the rapid <sup id=\"fnref1:1\"><a href=\"#fn:1\" class=\"footnote-ref\">1<\/a><\/sup> of injection molding (10\u201360 seconds per shot) produces parts far faster and cheaper than CNC machining the same quantity one at a time.<\/p>\n<\/div>\n<div class=\"claim claim-false\" style=\"background-color: #f7e8e8; border-color: #f7e8e8; color: #8a4a4a;\">\n<p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#dc2626\" stroke-width=\"2\"><line x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\"\/><line x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\"\/><\/svg><b>\u201cCNC machining and injection molding produce identical surface finishes on plastic parts.\u201d<\/b><span class=\"claim-true-or-false\">Vals<\/span><\/p>\n<p class=\"claim-explanation\">CNC machined plastics show tool marks (Ra 0.8\u20133.2 \u03bcm unless polished) and require deburring. Injection-molded parts replicate the mold surface at Ra 0.05\u20131.6 \u03bcm depending on mold polish grade, and complex surface textures can be molded-in permanently without post-processing.<\/p>\n<\/div>\n<h2>How Do the Two Processes Compare on Tolerances and Precision?<\/h2>\n<p>CNC machining achieves tolerances of \u00b10.005\u20130.025 mm on metals and \u00b10.025\u20130.1 mm on plastics. Injection molding typically achieves \u00b10.05\u20130.3 mm for general dimensions, with precision tooling and controlled processing reaching \u00b10.025\u20130.05 mm for tight-tolerance features. The tolerance gap is largest for thin-section features and tall, slender walls where injection-molded plastic experiences differential shrinkage that CNC machining avoids.<\/p>\n<p>Plastic shrinkage is the primary source of injection molding dimensional uncertainty. Semi-crystalline polymers (nylon, POM, PP) shrink 1.5\u20132.5% after ejection; amorphous polymers (ABS, PC, PS) shrink 0.4\u20130.8%. The mold is machined oversized to compensate, but shrinkage varies with wall thickness, injection pressure, and cooling rate, creating dimensional variation that CNC machining does not face. For parts requiring sub-0.05 mm tolerances on all features, CNC machining is almost always the correct choice.<\/p>\n<figure style=\"text-align:center;margin:2em 0;\">\n<img decoding=\"async\" src=\"https:\/\/zetarmold.com\/wp-content\/uploads\/2026\/02\/800x457_plastic-molding-process-cycles.webp\" alt=\"Injection molding vs machining process cycle comparison\" style=\"max-width:100%;height:auto;\" \/><figcaption style=\"font-size:0.78em; color:#888; font-style:italic; margin-top:4px; text-align:center;\">Process cycle comparison chart<\/figcaption><\/figure>\n<p>Part-to-part repeatability also differs. Injection molding, once optimized, produces statistically consistent parts with Cpk &gt; 1.33 achievable for many dimensions, making it excellent for high-volume production where consistency is critical. CNC machining shows slightly more setup-to-setup variation when parts are repositioned for different operations, but individual part accuracy is higher. For medical devices and aerospace components where every part must meet tight tolerances, CNC machining\u2019s superior per-part accuracy justifies its higher cost.<\/p>\n<h2>Which Materials Can Each Process Handle?<\/h2>\n<p>Injection molding processes thermoplastics and thermosets\u2014a wide but defined material set. Common materials include ABS, PP, PE, PC, nylon, POM, TPU, and engineering resins. Metals cannot be injection molded in standard equipment (though metal injection molding\u2014MIM\u2014handles fine metal parts). Material changes require machine purging, which adds downtime and cost. Highly filled or fiber-reinforced materials can be injection molded but require hardened tooling.<\/p>\n<p><a href=\"https:\/\/zetarmold.com\/nl\/services\/cnc-verspaning\/\">CNC-bewerking<\/a> works with essentially any solid material: aluminum, steel, titanium, copper, brass, PEEK, UHMW-PE, Delrin, carbon fiber composites, ceramics, and more. This material flexibility makes CNC machining indispensable for metal prototypes, final metal parts, and specialty polymers that cannot be injection molded. When a design requires both plastic housing and metal brackets, CNC machining provides a unified manufacturing path.<\/p>\n<div class=\"claim claim-true\" style=\"background-color: #eff7ef; border-color: #eff7ef; color: #5a8a5a;\">\n<p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#16a34a\" stroke-width=\"2\"><path d=\"M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z\"\/><\/svg><b>\u201cCNC machining is suitable for metal parts while injection molding is limited to plastics and thermosets.\u201d<\/b><span class=\"claim-true-or-false\">Echt<\/span><\/p>\n<p class=\"claim-explanation\">Standard injection molding cannot process bulk metals. CNC machining handles aluminum, steel, titanium, and specialty alloys with equal facility. For products requiring metal components\u2014structural brackets, heat sinks, precision shafts\u2014CNC machining or casting is the correct process.<\/p>\n<\/div>\n<div class=\"claim claim-false\" style=\"background-color: #f7e8e8; border-color: #f7e8e8; color: #8a4a4a;\">\n<p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"20\" height=\"20\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#dc2626\" stroke-width=\"2\"><line x1=\"18\" y1=\"6\" x2=\"6\" y2=\"18\"\/><line x1=\"6\" y1=\"6\" x2=\"18\" y2=\"18\"\/><\/svg><b>\u201cCNC machined plastic parts always outperform injection-molded plastic parts mechanically.\u201d<\/b><span class=\"claim-true-or-false\">Vals<\/span><\/p>\n<p class=\"claim-explanation\">Mechanical performance depends on material grade and processing, not manufacturing method. Injection-molded nylon or PEEK parts can exceed the strength of CNC-machined ABS. The key factor is material selection, not whether the part was molded or machined.<\/p>\n<\/div>\n<h2>How Do Lead Times and Throughput Compare?<\/h2>\n<p>CNC machining provides parts in 1\u201310 days for simple to moderately complex parts\u2014no tooling fabrication required. Injection molding requires 4\u201312 weeks for mold fabrication before the first part is produced. However, once the mold is ready, injection molding produces parts at cycle times of 10\u2013120 seconds per shot, enabling 500\u20135,000 parts per shift. CNC machining of the same part may take 5\u201360 minutes per part, making high-volume production impractical.<\/p>\n<p>For iterative product development, CNC machining\u2019s instant-on capability is a decisive advantage. Engineering changes can be implemented and new parts produced within days. Injection molding requires mold modification (days to weeks) for each design change. Products with frequent design iterations should remain in CNC machining until the design is frozen, then transition to injection molding for production scale.<\/p>\n<h2>Injection Molding vs CNC Machining: Side-by-Side Comparison<\/h2>\n<table style=\"width:100%;border-collapse:collapse;margin:1.5em 0;\">\n<caption style=\"font-weight:bold;margin-bottom:0.5em;\">Injection Molding vs CNC Machining Comparison<\/caption>\n<thead>\n<tr>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">Factor<\/th>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">Spuitgieten<\/th>\n<th style=\"border:1px solid #ddd;padding:8px;background:#f5f5f5;\">CNC-bewerking<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">Best volume<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">10,000\u2013millions<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">1\u201310,000<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">Tooling cost<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">$5,000\u2013$100,000<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">None (per part)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">Part cost (high vol)<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">$0.05\u2013$5.00<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">$5\u2013$500+<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">Toleranties<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">\u00b10.05\u20130.3 mm<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">\u00b10.005\u20130.05 mm<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">Lead time<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">4\u201312 weeks (first part)<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Spuitgieten versus bewerkingsprocescyclusvergelijking<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">Materialen<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Plastics, thermosets<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Metals, plastics, composites<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">Geometry complexity<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Limited by draft\/undercuts<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">High (5-axis capability)<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">Surface finish<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">As-molded, texture options<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Tool marks, requires finishing<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #ddd;padding:8px;\">Ontwerpflexibiliteit<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">Low (costly to change)<\/td>\n<td style=\"border:1px solid #ddd;padding:8px;\">High (file change only)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The right choice is almost never absolute. In our factory, we recommend a phased approach: use CNC machining for pre-production prototypes and engineering validation (&lt; 500 parts), then transition to low-volume injection molding tools for bridge production (500\u201310,000 parts), and finally high-cavitation production molds for volumes above 10,000 parts per year.<\/p>\n<h2>Veelgestelde vragen<\/h2>\n<h3>When should I use injection molding instead of CNC machining?<\/h3>\n<p>Choose injection molding over CNC machining when: (1) production volume exceeds 10,000 parts per year, making tooling cost amortization favorable; (2) part geometry suits molding design rules (uniform wall thickness, 1\u00b0\u20133\u00b0 draft, limited undercuts); (3) the material is a standard thermoplastic or thermoset available in injection molding grades; (4) per-part cost reduction is the primary objective; (5) part-to-part consistency across hundreds of thousands of units is required. Injection molding\u2019s rapid cycle time (10\u2013120 seconds), high repeatability, and ability to produce complex geometries with molded-in features (threads, snaps, ribs) at no additional cost make it the clear choice for mature, high-volume production.<\/p>\n<h3>What is the minimum quantity that makes injection molding cost-effective?<\/h3>\n<p>The break-even quantity depends on mold cost and part design. For a simple $10,000 mold producing parts that cost $1.00 each via CNC machining, injection molding at $0.30 per part breaks even at approximately 14,300 parts. For a complex $50,000 mold with CNC parts at $25 each and injection parts at $1.50 each, break-even is around 2,150 parts. Low-volume injection molding using aluminum tooling ($2,000\u2013$8,000) lowers the minimum economic quantity to 500\u20132,000 parts. Always calculate break-even before choosing, as the answer varies significantly by part and volume.<\/p>\n<h3>Can injection molding achieve the same tolerances as CNC machining?<\/h3>\n<p>Injection molding cannot consistently match CNC machining tolerances for all dimensions. CNC machining achieves \u00b10.005\u20130.025 mm on metals; injection molding typically achieves \u00b10.05\u20130.2 mm on general dimensions. However, specific injection-molded features\u2014precision bore diameters, snap-fit deflections, boss heights\u2014can achieve \u00b10.02\u20130.05 mm with optimized tooling and processing. For parts where only a subset of features requires tight tolerances, injection molding often qualifies; for parts where every feature must hold \u00b10.01 mm, CNC machining is necessary. Post-molding machining of critical surfaces is a common hybrid strategy.<\/p>\n<h3>Can the same design be used for both CNC machining and injection molding?<\/h3>\n<p>The same CAD model cannot typically be used for both processes without modifications. CNC machining allows sharp internal corners, deep pockets, 0\u00b0 draft walls, and variable wall thickness\u2014features that cause tooling failure in injection molding. Injection molding requires draft angles (1\u00b0\u20133\u00b0), uniform wall thickness (within 25% of nominal), radiused corners, and no locked undercuts in the pull direction. To transition from CNC prototype to injection mold, designers must apply DFM modifications: adding draft, coring out thick sections, eliminating deep sharp pockets, and adding draft-aligned ribbing for structural reinforcement. Our DFM service helps customers make this transition efficiently.<\/p>\n<h3>What are the key advantages of CNC machining over injection molding?<\/h3>\n<p>CNC machining\u2019s key advantages are: (1) no tooling investment or lead time\u2014parts are available in days from a CAD file; (2) superior dimensional tolerances (\u00b10.005\u20130.025 mm) for precision components; (3) material flexibility\u2014metals, ceramics, and specialty polymers that cannot be injection molded; (4) design flexibility\u2014changes cost nothing except programming time; (5) suitable for prototype and low-volume (1\u201310,000 parts) applications; (6) enables complex geometries with deep pockets, 0\u00b0 walls, and undercut features that injection molding cannot produce without expensive side actions. For defense, aerospace, medical, and semiconductor applications requiring metal components with tight tolerances, CNC machining is irreplaceable.<\/p>\n<h3>How do I decide between injection molding and CNC machining for a new product?<\/h3>\n<p>Follow this decision framework: (1) Estimate total lifetime production volume\u2014if above 50,000 units, injection molding is almost always more economical for plastic parts; (2) Check material\u2014if metal is required, CNC machining or casting; (3) Review tolerances\u2014if any critical dimension requires better than \u00b10.05 mm, evaluate CNC machining or post-mold machining; (4) Assess design maturity\u2014if the design will change frequently, stay in CNC machining until frozen; (5) Calculate break-even quantity using actual mold and CNC quotes; (6) Consider time-to-market\u2014if first parts are needed in 2 weeks, CNC machining; 4\u201312 weeks is acceptable, injection molding. When in doubt, start with CNC machining for validation, then transfer to injection molding at production scale.<\/p>\n<hr style=\"margin:2em 0;border:none;border-top:1px solid #e0e0e0;\" \/>\n<ol class=\"footnotes\">\n<li id=\"fn:1\">\n<p><strong>cycle time:<\/strong> Cycle time is the total duration of one injection molding production cycle measured in seconds, including injection, packing, cooling, and ejection phases. <a href=\"#fnref1:1\" class=\"footnote-backref\">\u21a9<\/a><\/p>\n<\/li>\n<li id=\"fn:2\">\n<p><strong>tolerances:<\/strong> Tolerances refers to the permissible dimensional variation defined in engineering drawings, typically measured in millimeters or inches, that a manufactured part must achieve. <a href=\"#fnref1:2\" class=\"footnote-backref\">\u21a9<\/a><\/p>\n<\/li>\n<li id=\"fn:3\">\n<p><strong>amortization:<\/strong> Amortization is a financial concept defined as the distribution of a fixed upfront cost\u2014such as mold tooling\u2014across the total quantity of parts produced to calculate per-unit cost. <a href=\"#fnref1:3\" class=\"footnote-backref\">\u21a9<\/a><\/p>\n<\/li>\n<\/ol>\n<p><script type=\"application\/ld+json\">{\n    \"@context\": \"https:\\\/\\\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"When should I use injection molding instead of CNC machining?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Choose injection molding over CNC machining when: (1) production volume exceeds 10,000 parts per year, making tooling cost amortization favorable; (2) part geometry suits molding design rules (uniform wall thickness, 1\\u00b0\\u20133\\u00b0 draft, limited undercuts); (3) the material is a standard thermoplastic or thermoset available in injection molding grades; (4) per-part cost reduction is the primary objective; (5) part-to-part consistency across hundreds of thousands of units is required. 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For parts where only a subset of features requires tight tolerances, injection molding often qualifies; for parts wher\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can the same design be used for both CNC machining and injection molding?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"The same CAD model cannot typically be used for both processes without modifications. CNC machining allows sharp internal corners, deep pockets, 0\\u00b0 draft walls, and variable wall thickness\\u2014features that cause tooling failure in injection molding. Injection molding requires draft angles (1\\u00b0\\u20133\\u00b0), uniform wall thickness (within 25% of nominal), radiused corners, and no locked undercuts in the pull direction. To transition from CNC prototype to injection mold, designers must apply DFM modifications:\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What are the key advantages of CNC machining over injection molding?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"CNC machining's key advantages are: (1) no tooling investment or lead time\\u2014parts are available in days from a CAD file; (2) superior dimensional tolerances (\\u00b10.005\\u20130.025 mm) for precision components; (3) material flexibility\\u2014metals, ceramics, and specialty polymers that cannot be injection molded; (4) design flexibility\\u2014changes cost nothing except programming time; (5) suitable for prototype and low-volume (1\\u201310,000 parts) applications; (6) enables complex geometries with deep pockets, 0\\u00b0 walls,\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How do I decide between injection molding and CNC machining for a new product?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Follow this decision framework: (1) Estimate total lifetime production volume\\u2014if above 50,000 units, injection molding is almost always more economical for plastic parts; (2) Check material\\u2014if metal is required, CNC machining or casting; (3) Review tolerances\\u2014if any critical dimension requires better than \\u00b10.05 mm, evaluate CNC machining or post-mold machining; (4) Assess design maturity\\u2014if the design will change frequently, stay in CNC machining until frozen; (5) Calculate break-even quantity u\"\n            }\n        }\n    ]\n}<\/script><\/p>","protected":false},"excerpt":{"rendered":"<p>Belangrijkste punten\nVoor een uitgebreid overzicht, zie onze Complete Gids voor Spuitgieten.\nSpuitgieten is uitstekend voor grote aantallen (10.000+ onderdelen); CNC-bewerking is beter voor kleine series en prototypes.\nCNC-bewerkingstoleranties bereiken \u00b10,005 mm; spuitgieten haalt doorgaans \u00b10,05\u20130,3 mm.\nSpuitgieten ondersteunt een beperkt assortiment kunststoffen; CNC-bewerking werkt met metalen, kunststoffen, [\u2026]<\/p>","protected":false},"author":1,"featured_media":52394,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"Injection Molding vs CNC Machining: Which to Choose?","_seopress_titles_desc":"Compare injection molding vs CNC machining by cost, tolerance, lead time, and volume. Find out which process fits your project with ZetarMold's guide.","_seopress_robots_index":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[52],"tags":[88,48,125,50,90],"meta_box":{"post-to-quiz_to":[]},"_links":{"self":[{"href":"https:\/\/zetarmold.com\/nl\/wp-json\/wp\/v2\/posts\/52387"}],"collection":[{"href":"https:\/\/zetarmold.com\/nl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zetarmold.com\/nl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/nl\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/nl\/wp-json\/wp\/v2\/comments?post=52387"}],"version-history":[{"count":0,"href":"https:\/\/zetarmold.com\/nl\/wp-json\/wp\/v2\/posts\/52387\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zetarmold.com\/nl\/wp-json\/wp\/v2\/media\/52394"}],"wp:attachment":[{"href":"https:\/\/zetarmold.com\/nl\/wp-json\/wp\/v2\/media?parent=52387"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zetarmold.com\/nl\/wp-json\/wp\/v2\/categories?post=52387"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zetarmold.com\/nl\/wp-json\/wp\/v2\/tags?post=52387"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}