We offer a full range of surface finishes for CNC machined parts, so your components arrive ready to assemble with the appearance, corrosion resistance and wear resistance you specify.
Available Finishes
| Finish | Materials | Purpose |
|---|---|---|
| As machined | All | Lowest cost; visible tool marks |
| Bead blasting | Metals | Uniform matte texture, hides tool marks |
| Anodizing (Type II) | Aluminum | Corrosion resistance, color options |
| Hard anodizing (Type III) | Aluminum | Wear and abrasion resistance |
| Electroplating (nickel, zinc, chrome) | Steel, brass, copper | Corrosion protection, conductivity, appearance |
| Passivation | Stainless steel | Improves natural corrosion resistance |
| Black oxide | Steel | Mild corrosion resistance, black appearance |
| Powder coating / painting | Metals | Durable colored finish |
| Polishing | Metals, plastics | Smooth, reflective surfaces |
Frequently Asked Questions
Which finish is best for aluminum parts?
Type II anodizing is the most common choice for corrosion resistance and color; Type III hard anodizing is used where wear resistance is needed.
Does finishing affect tolerances?
Yes. Coatings add thickness, so critical dimensions should note whether they apply before or after finishing. Our engineers will flag this in the DFM review.
Ready to start your project?
Send us your drawings and get a quote with free DFM feedback. All files are kept strictly confidential.