A growing library of technical guides written by our engineers — the same people who review your RFQs. Practical, data-backed, and focused on what actually affects cost and quality in CNC manufacturing.
Every article here is written by a mechanical engineer on our staff — usually in response to a question we got from a customer\'s RFQ. If ten customers ask us the same question ("what's the difference between 304 and 316?", "when do I actually need 5-axis?"), we write an article so the eleventh doesn\'t have to wait for an email reply.
We don\'t optimize these for traffic. They\'re not sales copy. They\'re the answers we\'d give over the phone to a designer or procurement buyer — with the numbers, the tables, and the tradeoffs that actually matter. If you disagree with something we wrote, or think we missed the point of your application, email [email protected] — we update articles in response to good feedback.
Wall thickness, tolerances, threads, and design decisions that drive cost. Start with the 10 decisions that double your cost.
Reading line items, Incoterms, and landed-cost thinking. Start with Reading a CNC quote line by line.
Grade comparisons, surface treatments, and process tradeoffs. Start with How to choose a metal for CNC.
This is not an encyclopedia of CNC machining or an academic reference. It's a working library — focused on the specific decisions you'll make when sending a part to manufacture, and the specific details you'll need to argue it through procurement review. For deeper theoretical coverage, the Machinery's Handbook, ASM Metals Handbook, and SME textbooks remain the standards.
What tolerances are achievable on CNC-milled and turned parts, at what cost, and how to choose which to apply. Full ISO/ASME/DIN reference tables included.
Read guide →Sharp internal corners, arbitrary tolerances, exotic threads — the design choices that look innocent on the drawing but triple the quote. With fixes for each.
Read guide →A decision framework for picking between aluminum, steel, titanium, and stainless — based on load, environment, cost, and manufacturability.
Read guide →Most guides on this site started as a customer question we got repeatedly. If there's something you wish we'd written about, tell us — we'll either answer privately or publish a guide. Either way, you'll have the answer.
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