What Coating does for 3D printed parts
Coating is one of the 3D Plus hardware finishing services on AIHFABS. It is applied after printing so the part leaves production closer to a usable product—not only a raw build. Use this page to decide whether Coating matches your cosmetic, durability, or assembly requirements before you upload a file.
Coating in 3D printing applies a protective or decorative layer to the surface of a printed object to enhance its performance and appearance. Coating improves the durability and aesthetics of 3D printed parts by increasing surface smoothness, adding color, and providing additional protection against environmental factors such as moisture, UV radiation, and abrasion. We offer Gray Primer Coating for SLA printed resin parts.
Finishing is quoted with the print. Select Coating in checkout, review price and lead time, and keep printing plus post-processing in one order instead of coordinating a second shop.
Why teams specify Coating
Appearance
Coating can hide layer lines, even out color, or create a more uniform surface for display models, consumer housings, and review samples.
Performance
Depending on the process, Coating may improve wear, corrosion resistance, grip, or light diffusion so the part survives handling and end use.
Ready-to-assemble parts
When Coating is combined with printing, you receive parts that are closer to install-ready, reducing secondary work in your own workshop.
How to order this finish
Ordering Coating follows the same 3D Plus software flow as a standard print. You do not need a separate finishing RFQ for catalog options.
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Upload the CAD file
Use STL, STEP, or another supported format. The quoter checks volume and geometry so finishing can be priced against the actual part.
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Choose print process, material, and Coating
Pick SLA, SLS, MJF, SLM, FDM, DLP, or CNC where applicable, then add Coating and any other 3D Plus hardware options the part needs.
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Compare price, lead time, and checkout
Review supplier options, confirm quantity, and place the order. Printing and finishing stay on one timeline and one invoice.
Compatible processes and design notes
Coating is typically applied to plastics or metals produced with industrial 3D printing. Compatibility depends on material, wall thickness, and whether the surface can be reached by spray, media, chemistry, or tooling. Deep recesses, thin walls, and optical faces may need design review. If the automatic quote cannot apply Coating to your file, request a manual quotation.
Need Coating on a batch, a mixed-material assembly, or a part that also requires tapping or painting? Keep those options in the same quote so lead time includes the full stack of operations.
