What Coating does after CNC machining
Coating is a CNC finishing step on AIHFABS. It runs after milling or turning so the blank leaves closer to a usable part — not only a machine finish. Use this page to decide whether Coating matches color, wear, or assembly needs before you upload a file.
Coating on a machined part is a primer, conversion, or protective film applied after the tool leaves the stock. It evens the cut surface, adds color or corrosion resistance, and preps the blank for paint or assembly — on the same traveler as milling or turning.
Finishing is quoted with the machine work. Select Coating in checkout, review price and lead time, and keep machining plus post-processing on one order instead of sending a raw blank to a second shop.
Why teams specify Coating on CNC parts
Appearance
Coating can hide cutter marks, even out color, or leave a uniform skin on housings, brackets, and review samples.
Performance
Depending on the process, Coating may improve wear, corrosion resistance, or grip so the machined part survives handling and end use.
Ready-to-assemble blanks
When Coating sits on the same traveler as milling or turning, the part arrives closer to install-ready — color, coat, or threads already on it.
How to order this CNC finish
Ordering Coating uses the same upload as a standard CNC quote. You do not need a separate finishing RFQ for catalog options.
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Upload the CAD file
Use STEP, STP, or another supported format. The quoter reads the stock so finishing can be priced against the actual blank.
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Choose CNC process, material, and Coating
Pick milling, turning, or another CNC route, then add Coating and any other finishing the part needs.
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Compare price, lead time, and checkout
Review options, confirm quantity, and place the order. Machining and finishing stay on one timeline and one invoice.
Compatible stock and design notes
Coating is typically applied to metals — and some plastics — after CNC machining. Compatibility depends on alloy, wall thickness, and whether the surface can be reached by bath, media, or a tap. Deep pockets, thin walls, and datum faces may need a review. If the automatic quote cannot apply Coating, request a manual quotation.
Need Coating on a batch, a mixed set, or a part that also needs tapping or paint? Keep those options in the same quote so lead time includes the full stack.
