Precision Aluminum CNC Machining & Color Anodizing Services
At CNCALPARTS, we focus exclusively on aluminum. While general machine shops juggle various materials, our facility in Shenzhen is optimized entirely for the unique demands of aluminum alloys. This specialization lets us master thin-wall machining, deformation control, and high-quality surface finishing, including color anodizing.
We partner with engineering teams in robotics, automation, and electronics who require consistent, high-tolerance components with professional-grade aesthetics.
Professional Color Anodizing for Aluminum Parts
Color anodizing does more than provide a cosmetic finish; it creates a durable, corrosion-resistant oxide layer while maintaining the precision of your machined features.
Color Range
Beyond standard clear and black, we provide a wide spectrum of colors to suit branding, functional coding, or aesthetic requirements.
Material Compatibility
We have deep experience with the specific anodizing responses of different alloys. For instance, 6061-T6 provides a consistent, high-quality finish, while 7075 may require specific process adjustments to ensure uniform color saturation.
Pre-treatment
To achieve the desired finish, we utilize bead blasting or brushing prior to the anodizing bath. Bead blasting provides a uniform, matte, non-reflective surface that hides minor machining marks.
Dimensional Control
We account for the thickness of the anodic layer during the programming phase. If you have tight-tolerance fits, our engineering team will adjust the CNC toolpaths to compensate for the buildup, ensuring your parts assemble correctly post-anodizing.
Managing Expectations: Batch Consistency
Color anodizing is an electrochemical process. While we maintain rigorous control over bath chemistry, temperature, and immersion time, slight variations can occur between production batches.
For projects where color matching is critical, we recommend the following protocols.
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1
Defining Critical Surfaces
Let us know which faces are visible so we can prioritize finish quality on those areas.
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2
Color Samples
We can provide sample coupons or first-article inspections to confirm the color match against your requirements before full-scale production.
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3
Consistency Protocols
We process all parts of a single batch in the same tank run to ensure the highest possible uniformity.
Technical Machining Capabilities
By focusing only on aluminum, we have optimized our workflow for speed, accuracy, and repeatability.
| Feature | Specification |
|---|---|
| Common Alloys | 6061, 6063, 6082, 7075, 2024, 5052, 5083 |
| Machining | 3-Axis, 4-Axis, 5-Axis CNC Milling & Turning |
| Tolerance | Down to ±0.01 mm |
| Surface Roughness | Ra 0.8–3.2 µm |
| Max Milling Size | 1000 × 600 × 500 mm |
| Finishing | Clear, Black, Color, Hard Anodizing, Powder Coating |
From Prototype to Production
We support your product lifecycle, whether you are in the design iteration phase or moving to full-scale assembly.
Prototyping
1–10 pcsFast turnaround for design validation. We help identify potential manufacturing issues—such as excessive thin walls or deep pockets—before you commit to production.
Low-Volume & Batch
10–500+ pcsWe focus on stable workholding and repeatable setups to ensure the 500th part matches the first.
Why Partner with CNCALPARTS?
We are not a generalist shop. By limiting our focus to aluminum, we provide superior value to engineers who need a reliable partner.
- Complex Geometries
- 5-axis machining for housings, heat sinks, and optical mounts.
- Tight Tolerances
- Precision hole and thread accuracy down to ±0.01 mm.
- Surface Integrity
- Expert handling of cosmetic parts and professional-grade anodizing.
- Clear Communication
- Direct interaction with an engineering-focused team that understands your technical drawings and 3D models.
Request a Quote
If you are an engineer or procurement professional looking for a dedicated aluminum machining partner, we are ready to review your project. We work with standard formats including STEP, STP, SLDPRT, and PDF.
Send your files to info@cncalparts.com for a technical review and quotation.
CNCALPARTS
We Machine Aluminum. Only Aluminum.