SURFACE FINISHING
Surface Finishing Options for CNC Machined Parts
Pick a finish by the problem you need to solve — corrosion, wear, colour, electrical contact, or a tight fit that must not grow. Every card below links to the process page and tells you the Ra, the film thickness and the materials that finish will accept.
20finishing processes
Ra 0.2 – 12.5 µmroughness range
12 hourstypical quote turnaround
Start from the problem
START HERE
How to choose a surface finish: start from the problem
Six decision cards. Each one names the finishes that answer it and the reason why, then links straight into the process page.
Corrosion protection
The part lives outdoors or in moisture, and rust is the failure mode. These finishes build a barrier or a conversion layer on the surface itself.