Guides for people sourcing custom machined automotive parts.https://autocncparts.com/https://autocncparts.com/blog/aftermarket-auto-parts-trade-shows-2027-calendar/https://autocncparts.com/blog/aftermarket-auto-parts-trade-shows-2027-calendar/Aftermarket car parts trade shows for 2027 and 2028: SEMA, PRI, Tokyo Auto Salon, EQUIP AUTO, Essen and Automechanika, with organiser dates and a visit plan.Sun, 25 Oct 2026 00:00:00 GMThttps://autocncparts.com/blog/billet-differential-cover-and-rear-end-parts/https://autocncparts.com/blog/billet-differential-cover-and-rear-end-parts/Billet differential cover guide: bolt pattern, flange flatness, sealing finish, fill and drain ports, bearing cap support and material for rear end parts.Sun, 25 Oct 2026 00:00:00 GMThttps://autocncparts.com/blog/bearing-bore-tolerance-automotive-press-fits/https://autocncparts.com/blog/bearing-bore-tolerance-automotive-press-fits/How to specify bearing bore tolerance on automotive parts: ISO fit classes, aluminum housings that loosen when hot, bore finish, chamfers and how to inspect.Thu, 22 Oct 2026 00:00:00 GMThttps://autocncparts.com/blog/an-port-machining-thread-specs/https://autocncparts.com/blog/an-port-machining-thread-specs/AN, metric fine and NPT ports compared for machined car parts: dash sizes, thread callouts, sealing method and what to write on the drawing for fluid ports.Sat, 17 Oct 2026 00:00:00 GMThttps://autocncparts.com/blog/4130-vs-4140-chromoly-automotive-parts/https://autocncparts.com/blog/4130-vs-4140-chromoly-automotive-parts/4130 vs 4140 chromoly compared for machined automotive parts: carbon content, strength, weldability, heat treatment, stock forms and which suits which part.Mon, 12 Oct 2026 00:00:00 GMThttps://autocncparts.com/blog/anodizing-and-finishes-for-billet-parts/https://autocncparts.com/blog/anodizing-and-finishes-for-billet-parts/Clear anodize, color anodize, hard coat, powder coat, plating and bead blast compared on cost, durability and how much each one changes a machined dimension.Thu, 08 Oct 2026 00:00:00 GMThttps://autocncparts.com/blog/how-to-choose-a-cnc-shop-for-car-parts/https://autocncparts.com/blog/how-to-choose-a-cnc-shop-for-car-parts/Fit matters more than reputation. The shop types, the seven questions worth asking before you send a drawing and the answers that should make you keep looking.Thu, 24 Sep 2026 00:00:00 GMThttps://autocncparts.com/blog/what-a-good-automotive-rfq-looks-like/https://autocncparts.com/blog/what-a-good-automotive-rfq-looks-like/For machine shops. How to score an incoming automotive request in two minutes, which gaps are worth a phone call and how to price one off work properly.Thu, 24 Sep 2026 00:00:00 GMThttps://autocncparts.com/blog/6061-vs-7075-automotive-brackets/https://autocncparts.com/blog/6061-vs-7075-automotive-brackets/The two aluminum alloys most billet car parts are cut from, compared on strength, fatigue, corrosion, welding and cost, and when each one is the wrong choice.Wed, 23 Sep 2026 00:00:00 GMThttps://autocncparts.com/blog/custom-cnc-auto-parts-guide/https://autocncparts.com/blog/custom-cnc-auto-parts-guide/The whole job in one page: whether your part should be machined, what it costs, which alloy to ask for, what to send a shop and how to read the quotes you get.Wed, 23 Sep 2026 00:00:00 GMThttps://autocncparts.com/blog/engine-swap-mount-brackets/https://autocncparts.com/blog/engine-swap-mount-brackets/Swap parts are easy shapes in hard positions. How to define a mount or adapter plate so the first set fits, and where to leave adjustment and where not to.Wed, 23 Sep 2026 00:00:00 GMThttps://autocncparts.com/blog/reverse-engineer-a-discontinued-car-part/https://autocncparts.com/blog/reverse-engineer-a-discontinued-car-part/What a shop needs when the only reference is the broken original: which dimensions to measure, when 3D scanning pays off and what to send with the RFQ.Wed, 23 Sep 2026 00:00:00 GMThttps://autocncparts.com/blog/what-a-machine-shop-needs-to-quote/https://autocncparts.com/blog/what-a-machine-shop-needs-to-quote/Shops price what they can see and pad what they cannot. The files, dimensions and notes that get a firm number, plus a copy and paste RFQ template to send.Wed, 23 Sep 2026 00:00:00 GMThttps://autocncparts.com/blog/billet-vs-cast-auto-parts/https://autocncparts.com/blog/billet-vs-cast-auto-parts/Machining from solid and casting solve different problems. How the two compare on strength, cost per part, lead time and design freedom, and where they cross.Mon, 21 Sep 2026 00:00:00 GMThttps://autocncparts.com/blog/custom-cnc-auto-parts-cost/https://autocncparts.com/blog/custom-cnc-auto-parts-cost/A breakdown of what you pay for when a shop machines a one off or small batch automotive part, and four changes that bring a quote down without hurting it.Mon, 21 Sep 2026 00:00:00 GMT