Aluminum Anodizing Services for Custom CNC Parts
Aluminum anodizing services are commonly used for CNC machined aluminum parts that need a clean metal appearance, improved surface protection and better corrosion resistance.
We support anodizing for custom aluminum housings, panels, brackets, heatsinks, covers, fixtures and precision machined components. Before pricing, we review your material grade, anodizing type, color requirement, masking areas and critical dimensions.
Choose Clear, Black or Hardcoat Anodizing
Different aluminum parts need different anodizing finishes. The right choice depends on appearance, wear requirement, tolerance and final use.
Clear Anodizing
Clear anodizing keeps a natural aluminum appearance while adding a protective anodized layer. It is suitable for panels, covers, brackets and visible CNC aluminum parts.
- Natural aluminum appearance
- Clean visible surfaces
- Panels, covers and brackets
Black Anodizing
Black anodizing gives aluminum parts a black metallic finish. It is commonly used for housings, front panels, knobs, heatsinks and equipment components.
- Black aluminum appearance
- Matte or smooth surfaces
- Housings and heatsinks
Hardcoat Anodizing
Hardcoat anodizing, also called Type III anodizing, creates a thicker and harder surface for aluminum parts that need wear resistance or functional protection.
- Wear surfaces
- Sliding or contact areas
- Functional aluminum parts
Aluminum Materials and Surface Preparation
Common aluminum grades such as 6061, 6063, 6082 and 7075 can be anodized, but the final color and surface appearance may vary by alloy, batch and surface condition.
Anodizing does not hide deep machining marks, scratches or dents. If the part needs a cosmetic finish, surface preparation should be confirmed before anodizing.
As machined
Bead blasted
Brushed
Polished
For visible parts
Bead blasting before anodizing can create a more uniform matte surface for aluminum housings, panels and covers.
For tight-tolerance parts
Surface preparation and anodizing thickness should be reviewed together with final assembly requirements.
Masking, Threads and Critical Dimensions
Anodizing forms an oxide layer on the aluminum surface. For precision CNC parts, some areas may need masking or dimensional allowance.
Threaded holes
Close-tolerance bores
Bearing seats
Grounding pads
Sealing faces
Mating faces
Sliding surfaces
If a dimension must be controlled after anodizing, mark it on the drawing before pricing. This helps our team review masking, tolerance allowance and post-finish inspection needs.
Anodizing vs Other Surface Finishes
Anodizing is a strong choice for aluminum parts that need a metallic appearance and surface protection. Other finishes may fit better when color coverage, coating thickness or contact surfaces are more important.
Anodizing
Aluminum parts with metallic appearance.
Hardcoat
Wear resistance and functional surfaces.
Powder Coating
Thicker colored coating for metal parts.
Painting
Aluminum parts with metallic appearance.
Nickel Plating
Bright coating or contact surfaces.
If a dimension must be controlled after anodizing, mark it on the drawing before pricing. This helps our team review masking, tolerance allowance and post-finish inspection needs.
What to Send for an Anodizing Quote
A clear request helps reduce back-and-forth communication and improves pricing accuracy for anodized aluminum parts.
- STEP or STP files
- Aluminum material grade
- Color requirement
- Masking areas
- Cosmetic surfaces
- PDF drawings
- Anodizing type
- Thickness requirement
- Critical dimensions
- Quantity and packaging notes
Aluminum Anodizing FAQs
Can 6061 aluminum be anodized?
Yes. 6061 aluminum is commonly used for clear, black and hardcoat anodizing. Final appearance may vary depending on surface preparation and batch condition.
Does anodizing affect dimensions?
Yes. Anodizing adds an oxide layer to the aluminum surface. Hardcoat anodizing can have a greater dimensional effect, so threads, bores and mating faces should be reviewed before finishing.
Can anodizing hide machining marks?
No. Anodizing does not hide deep tool marks, scratches or dents. Bead blasting, brushing or polishing may be needed before anodizing if a cosmetic surface is required.
Request Aluminum Anodizing Services for CNC Parts
Need aluminum anodizing services for custom CNC parts? Send your STEP files, PDF drawings and finish requirements. We will review the anodizing type, material grade, masking areas and critical dimensions before pricing.