{"id":2882,"date":"2026-07-07T13:43:54","date_gmt":"2026-07-07T11:43:54","guid":{"rendered":"https:\/\/www.fries-gmbh.de\/knowledge\/custom-milled-parts\/"},"modified":"2026-07-07T13:43:54","modified_gmt":"2026-07-07T11:43:54","slug":"custom-milled-parts","status":"publish","type":"page","link":"https:\/\/www.fries-gmbh.de\/en\/knowledge\/custom-milled-parts\/","title":{"rendered":"Having Single Parts CNC-Milled: Process, Data and Cost Logic"},"content":{"rendered":"<p class=\"fw-zurueck\"><a href=\"https:\/\/www.fries-gmbh.de\/en\/knowledge\/\">\u2190 Back to the knowledge base<\/a><\/p>\n<article class=\"fw-artikel\">\n<header class=\"fw-kopf\">\n<p class=\"fw-kicker\">Knowledge \u00b7 CNC machining<\/p>\n<aside class=\"fw-kurzantwort\">\n<p><strong>In short:<\/strong> Having CNC parts made from quantity one is everyday business in contract manufacturing, from spare parts to prototypes. The price is driven less by machine runtime than by programming, set-up and technical review, which are spread over a single part. Supplying a complete drawing with a STEP file and demanding tolerances only where they serve a function gets you a faster quote and a cheaper part.<\/p>\n<\/aside>\n<\/header>\n<div class=\"fw-inhalt\">\n<h2>When is it worth having single parts milled?<\/h2>\n<p>Whenever a part cannot be bought: the discontinued spare part, a prototype before the series decision, a fixture for your own assembly, or the one special component in a project. Small batches of 5 to 50 pieces run through the same channel.<\/p>\n<h2>Which data does the manufacturer really need?<\/h2>\n<p>The short answer: a PDF drawing and a STEP file, plus material, quantity and target date. The drawing carries tolerances, surface data and thread specifications and remains the legally binding document; the 3D model speeds up programming and quoting considerably. State the material precisely (S355J2, 1.4301, EN AW-7075) and mention surface treatment. If no model exists, manufacturing from a sample or sketch is possible, it just takes longer to quote.<\/p>\n<h2>Why is a one-off so much more expensive than the same part in a series?<\/h2>\n<p>Because preparation dominates the price: drawing review, CAM programming, tooling, material procurement, machine set-up and first-article inspection are nearly identical for one part and for fifty. A worked example: two hours of preparation plus 30 minutes runtime means the single piece carries 2.5 hours; at ten pieces the share drops to 42 minutes per part. Second and third parts are always disproportionately cheap, so consider ordering foreseeable spare demand at the same time.<\/p>\n<h2>How do designers reduce the cost of a milled part?<\/h2>\n<p>Four levers matter most: tolerances only where they have a function (ISO 2768-m as the default), generous internal radii (R \u2265 4 mm allows rigid standard tools; sharp internal corners force EDM), standard materials that are on stock, and part dimensions that fit common raw material sizes. A practical tip: send the drawing to the manufacturer before final release; ten minutes of shop-floor feedback regularly saves a double-digit percentage of the part price.<\/p>\n<h3>Comparison: online platform or manufacturer with technical review?<\/h3>\n<table>\n<thead>\n<tr>\n<th>Criterion<\/th>\n<th>Online platform<\/th>\n<th>Contract manufacturer with review<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Quote<\/td>\n<td>instant, automatic<\/td>\n<td>after review, usually 1\u20132 days<\/td>\n<\/tr>\n<tr>\n<td>Drawing review<\/td>\n<td>limited, risk with buyer<\/td>\n<td>professional review, queries before production<\/td>\n<\/tr>\n<tr>\n<td>Complex parts, tight tolerances<\/td>\n<td>quickly at the limit<\/td>\n<td>core business<\/td>\n<\/tr>\n<tr>\n<td>Spare parts from samples<\/td>\n<td>usually impossible<\/td>\n<td>possible<\/td>\n<\/tr>\n<tr>\n<td>Downstream processes (welding, painting, assembly)<\/td>\n<td>rarely integrated<\/td>\n<td>from one source<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<section class=\"fw-faq\">\n<h2>Frequently asked questions<\/h2>\n<details class=\"fw-faq-item\">\n<summary class=\"fw-faq-frage\">Can you really order from quantity one?<\/summary>\n<div class=\"fw-faq-antwort\">\n<p>Yes. Single-part production to drawing is a core business of contract manufacturing. The only requirement is that the part is technically clearly defined; the manufacturer checks that free of charge during quoting.<\/p>\n<\/div>\n<\/details>\n<details class=\"fw-faq-item\">\n<summary class=\"fw-faq-frage\">What does a one-off CNC part cost?<\/summary>\n<div class=\"fw-faq-antwort\">\n<p>There is no flat rate, because programming and set-up dominate and depend on geometry. Simple plates start in the low three-digit range; complex parts with tight tolerances sit well above. A reliable quote follows the drawing review, usually within 48 hours.<\/p>\n<\/div>\n<\/details>\n<details class=\"fw-faq-item\">\n<summary class=\"fw-faq-frage\">Which file formats are ideal?<\/summary>\n<div class=\"fw-faq-antwort\">\n<p>PDF for the drawing, STEP for the 3D model. DXF helps with sheet parts. STEP is the vendor-neutral standard and speeds everything up.<\/p>\n<\/div>\n<\/details>\n<details class=\"fw-faq-item\">\n<summary class=\"fw-faq-frage\">Is manufacturing without a drawing possible?<\/summary>\n<div class=\"fw-faq-antwort\">\n<p>Yes, from a sample or sketch. The manufacturer measures the original and confirms critical dimensions. For fits, a short technical discussion is worthwhile because a worn sample only tells half the truth.<\/p>\n<\/div>\n<\/details>\n<\/section>\n<footer class=\"fw-cta\">\n<p>Fries Maschinen- und Anlagenbau mills single parts from quantity one to drawing, sample or STEP file, with a technical review instead of black-box pricing and quotes usually within 48 hours. More on <a href=\"https:\/\/www.fries-gmbh.de\/en\/cnc-machining\/\">CNC machining at Fries<\/a>.<\/p>\n<\/footer>\n<\/article>\n<p class=\"fw-zurueck\"><a href=\"https:\/\/www.fries-gmbh.de\/en\/knowledge\/\">\u2190 Back to the knowledge base<\/a><\/p>\n<p><script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"headline\":\"Having Single Parts CNC-Milled: Process, Data and Cost Logic\",\"description\":\"What a one-off CNC part costs, which data the manufacturer needs and how designers reduce the price. 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