Guides for engineers and buyers sourcing machined Delrin, acetal and POM parts.https://delrincnc.com/https://delrincnc.com/blog/deburring-delrin-and-acetal/https://delrincnc.com/blog/deburring-delrin-and-acetal/Acetal leaves a soft, stringy burr that sandpaper smears instead of cutting. Which deburring methods work, how to prevent burrs and how to write an edge note.Mon, 19 Oct 2026 00:00:00 GMThttps://delrincnc.com/blog/cutting-delrin-sheet-to-blanks/https://delrincnc.com/blog/cutting-delrin-sheet-to-blanks/Waterjet, CNC router and panel saw each cut acetal sheet differently. Typical tolerance, edge quality, stock allowance and which method suits which part.Sun, 18 Oct 2026 00:00:00 GMThttps://delrincnc.com/blog/bonding-delrin-parts/https://delrincnc.com/blog/bonding-delrin-parts/Acetal resists most adhesives because it is slick and chemically inert. Surface treatment, welding and mechanical joints, and how to design a joint that holds.Sat, 17 Oct 2026 00:00:00 GMThttps://delrincnc.com/blog/black-vs-natural-delrin/https://delrincnc.com/blog/black-vs-natural-delrin/Black and natural acetal share the same base resin, but colour affects UV life, inspection, marking and sometimes price. Where each one fits, plus ESD black.Fri, 16 Oct 2026 00:00:00 GMThttps://delrincnc.com/blog/acetal-wear-strips-and-guide-rails/https://delrincnc.com/blog/acetal-wear-strips-and-guide-rails/How to design acetal wear strips and guide rails for conveyors: acetal or UHMW, countersunk fixings, slotted holes for thermal expansion and lead-in shapes.Thu, 15 Oct 2026 00:00:00 GMThttps://delrincnc.com/blog/acetal-vs-ptfe/https://delrincnc.com/blog/acetal-vs-ptfe/PTFE slides and resists chemicals better, acetal is stiffer and creeps far less. Typical values, where each wins and when PTFE-filled acetal fits between.Wed, 14 Oct 2026 00:00:00 GMThttps://delrincnc.com/blog/acetal-vs-pet-and-pbt/https://delrincnc.com/blog/acetal-vs-pet-and-pbt/PET and PBT move less with heat and water than acetal, which slides better. Typical values, where each wins and which to pick for gears, guides and bushings.Tue, 13 Oct 2026 00:00:00 GMThttps://delrincnc.com/blog/acetal-valve-components/https://delrincnc.com/blog/acetal-valve-components/Acetal makes good valve stems, seats, cams and handles for water and air. Where it works, where chlorine and heat stop it and which approvals to ask about.Mon, 12 Oct 2026 00:00:00 GMThttps://delrincnc.com/blog/acetal-snap-fits-and-clips/https://delrincnc.com/blog/acetal-snap-fits-and-clips/How to design a cantilever snap fit in machined acetal: the strain formula, safe strain limits, root radius and how a machined part differs from a moulded one.Sun, 11 Oct 2026 00:00:00 GMThttps://delrincnc.com/blog/acetal-rod-plate-tube-sizes/https://delrincnc.com/blog/acetal-rod-plate-tube-sizes/Extruded acetal rod, sheet and tube come in set sizes with their own tolerances. How stock is supplied, how much oversize to expect and how to design to stock.Fri, 09 Oct 2026 00:00:00 GMThttps://delrincnc.com/blog/acetal-food-machinery-parts/https://delrincnc.com/blog/acetal-food-machinery-parts/Acetal guides, scrapers, star wheels and change parts for food lines: compliance paperwork to request, cleaning chemical limits and hygienic design rules.Mon, 05 Oct 2026 00:00:00 GMThttps://delrincnc.com/blog/delrin-machining-lead-times/https://delrincnc.com/blog/delrin-machining-lead-times/Stock availability, annealing and quantity decide a Delrin lead time more than machine time does. What a realistic timeline looks like and what shortens it.Fri, 25 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/delrin-material-properties-guide/https://delrincnc.com/blog/delrin-material-properties-guide/Mechanical, thermal, electrical and chemical properties of Delrin and acetal in one reference, with what each number actually means for a machined part.Fri, 25 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/equipment-checklist-for-machining-engineering-plastics/https://delrincnc.com/blog/equipment-checklist-for-machining-engineering-plastics/Workholding, tooling, stock handling and inspection gear that separates a shop that machines acetal daily from one that treats it as an occasional job.Fri, 25 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/from-rfq-to-delivered-part/https://delrincnc.com/blog/from-rfq-to-delivered-part/The full path from a buyer's RFQ to a finished acetal part: matching, anonymous previews and delivery, and exactly where each side's information stays private.Fri, 25 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/how-to-register-as-a-delrin-machining-supplier/https://delrincnc.com/blog/how-to-register-as-a-delrin-machining-supplier/What happens after you register: the anonymous RFQ preview, how a lead gets matched to your shop, what it costs and how to win the job once you take it.Fri, 25 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/delrin-machining-rfq-checklist/https://delrincnc.com/blog/delrin-machining-rfq-checklist/Everything a Delrin RFQ needs before it goes out: files, grade, tolerance, environment, quantity and paperwork. A working checklist plus a filled-out example.Fri, 25 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/acetal-bushing-and-bearing-design/https://delrincnc.com/blog/acetal-bushing-and-bearing-design/Running clearance changes with temperature in acetal, and a press fit relaxes over time. How to size a POM bushing, read PV limits and mount it so it stays put.Mon, 21 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/acetal-chemical-and-temperature-resistance/https://delrincnc.com/blog/acetal-chemical-and-temperature-resistance/POM handles fuels, solvents and neutral salts. Strong acid, hot water and sunlight are where it fails. What acetal survives and what destroys it fast.Mon, 21 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/design-guide-for-machined-acetal-parts/https://delrincnc.com/blog/design-guide-for-machined-acetal-parts/Wall thickness, radii, pockets, fits and tolerancing for machined POM. The design rules that lower an acetal quote without losing function or accuracy.Mon, 21 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/acetal-vs-nylon/https://delrincnc.com/blog/acetal-vs-nylon/Nylon absorbs water and grows, acetal stays put. How moisture, creep, impact and load change the choice between POM and nylon for machined gears and bushings.Mon, 21 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/acetal-vs-peek/https://delrincnc.com/blog/acetal-vs-peek/PEEK costs many times what acetal does. Temperature, chemistry, steam and regulatory need are the four reasons that justify paying for it, and the rest do not.Mon, 21 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/acetal-vs-uhmw/https://delrincnc.com/blog/acetal-vs-uhmw/UHMW survives abrasion and impact that destroys acetal. Acetal holds dimensions UHMW never will. How to pick between them for guides, liners and wear parts.Mon, 21 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/annealing-delrin-and-pom-parts/https://delrincnc.com/blog/annealing-delrin-and-pom-parts/Machining releases stress unevenly and acetal parts move after. When annealing is justified, where it fits in the sequence and what it adds to lead time.Mon, 21 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/common-defects-machining-acetal/https://delrincnc.com/blog/common-defects-machining-acetal/Smeared surfaces, chatter, packed chips, oversized bores and centreline voids. What each defect on a machined POM part says about the process behind it.Mon, 21 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/delrin-cnc-machining-cost/https://delrincnc.com/blog/delrin-cnc-machining-cost/Stock, setup, workholding, annealing and deburring decide what a machined POM part costs. How to read a quote and which changes lower it without redesign.Mon, 21 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/filled-acetal-grades/https://delrincnc.com/blog/filled-acetal-grades/PTFE filled acetal for dry running, glass filled for stiffness, ESD for electronics. What each filler changes, costs and does to machining and finish.Mon, 21 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/food-grade-and-detectable-acetal/https://delrincnc.com/blog/food-grade-and-detectable-acetal/Food contact acetal needs documentation, not just a colour. FDA and EU compliance, blue detectable grades, washdown chemistry and what to ask for up front.Mon, 21 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/how-to-choose-a-delrin-machining-supplier/https://delrincnc.com/blog/how-to-choose-a-delrin-machining-supplier/A metal shop that sometimes cuts plastic is a different supplier from one that runs acetal weekly. The questions to ask and the red flags to watch for.Mon, 21 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/machined-acetal-gear-design/https://delrincnc.com/blog/machined-acetal-gear-design/Acetal is the default plastic gear material. Backlash allowance, tooth load, running against steel or plastic, and what the drawing needs before it goes out.Mon, 21 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/machining-delrin-speeds-feeds-and-tooling/https://delrincnc.com/blog/machining-delrin-speeds-feeds-and-tooling/Acetal cuts fast with sharp positive rake tools and breaks chips cleanly. Typical speeds and feeds, tool geometry and what causes melting on a finish pass.Mon, 21 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/machining-vs-injection-molding-for-acetal-parts/https://delrincnc.com/blog/machining-vs-injection-molding-for-acetal-parts/Tooling cost, lead time, tolerance and design freedom decide whether an acetal part should be machined or moulded. How to work out where your quantity sits.Mon, 21 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/surface-finish-on-machined-acetal/https://delrincnc.com/blog/surface-finish-on-machined-acetal/Acetal takes a clean finish straight off the tool. Typical Ra ranges, when polishing helps, why burrs happen and how to write a finish note that works.Mon, 21 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/threads-and-tapped-holes-in-delrin/https://delrincnc.com/blog/threads-and-tapped-holes-in-delrin/Plastic threads strip at torques metal shrugs off. Thread engagement, pitch choice, inserts and the rules that keep a tapped hole working after assembly.Mon, 21 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/what-to-put-on-a-delrin-drawing/https://delrincnc.com/blog/what-to-put-on-a-delrin-drawing/Most acetal quotes differ because the drawing left something open. Grade, critical dimensions, inspection temperature and why each counts on the price.Mon, 21 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/delrin-vs-acetal-copolymer/https://delrincnc.com/blog/delrin-vs-acetal-copolymer/Homopolymer and copolymer acetal machine alike but differ in hot water, in thick sections and under load. How to choose one and write it on the drawing.Fri, 18 Sep 2026 00:00:00 GMThttps://delrincnc.com/blog/delrin-machining-tolerances/https://delrincnc.com/blog/delrin-machining-tolerances/Acetal expands about ten times more than steel. What tolerance a shop can hold on machined POM, when a part needs annealing and how to tolerance the drawing.Wed, 16 Sep 2026 00:00:00 GMT