Anodized Milling Aluminum Keyboard Case

When it comes to CNC milling and anodizing aluminum keyboard cases, Chiheng has the setup, skills, and track record to deliver exactly what you need — whether it’s a one-off prototype or a full production run.

Our CNC Milling Process for Aluminum Keyboard Cases

Step by Step Workflow from Milling to Anodizing

Producing a CNC aluminum keyboard case with an anodized finish is a multi-stage process. Each phase affects the final quality, so a tight workflow is key. Here’s how it typically goes:

1. Machining (CNC Milling)

• CNC milling shapes the raw aluminum block into the keyboard case design with tight tolerances.
• Precision is checked for mounting holes, switch cutouts, and overall fit.
• Sharp edges or burrs are removed to prevent finish issues later.

2. Cleaning and Surface Prep

• The case is degreased to remove cutting oils.
• Light polishing or bead blasting is done for a uniform surface texture.
• Any fingerprint, dust, or debris left behind can cause visible defects in anodizing.

3. Anodizing Process

• Cases are immersed in an electrolyte bath.
• The aluminum oxide layer is built up for corrosion resistance and color.
• Color dye (if used) is applied evenly to achieve the chosen anodized finish.

4. Finishing

• The anodized surface is sealed to lock in color and improve wear resistance.
• Optional post-processes like laser engraving, logos, or secondary coatings are added.

5. Assembly Readiness

• Every case is inspected for scratches, color uniformity, and dimensional accuracy.
• Units that pass are packaged for assembly with PCB, keycaps, and other components.

Tolerances and quality control

For a premium aluminum keyboard case, tight tolerances matter. Most CNC aluminum keyboard manufacturers, including Chiheng, hold tolerances around ±0.02mm. This ensures:

• Switch openings fit perfectly without wiggle
• USB or connector ports align precisely
• Cases and plates fit flush without gaps

QC steps like dimensional inspection, surface checks, and pre-anodizing cleaning are done to avoid defects later in the process.

Why Aluminum Is a Preferred Material for Keyboard Cases

If you’ve shopped for a premium mechanical keyboard, you’ve probably noticed many come in aluminum cases. There’s a good reason—aluminum offers the perfect balance of strength, precision, and style that serious users demand.

Aluminum stands out because it’s:

• Strong yet lightweight – Gives your keyboard a solid, stable feel without being overly heavy.
• Highly machinable – Perfect for precision CNC milling that ensures tight tolerances and clean edges.
• Excellent heat dissipation – Helps electronics run cooler.
• Corrosion-resistant – Especially when combined with anodizing, it lasts for years without degrading.
• Premium look and feel – Sleek, metallic surfaces give a high-end impression that plastic simply can’t match.

These factors make aluminum the go-to material for enthusiasts, custom builders, and professional keyboard manufacturers.

Common Designs and Types of Aluminum Keyboard Cases

Aluminum keyboard enclosures come in several styles to suit different needs:

• Full aluminum keyboard cases – Designed for maximum rigidity and durability.
• Low-profile aluminum cases – Slimmer and lighter for portability.
• 60% and 65% cases – Compact layouts for minimal desk space use.
• Custom aluminum keyboard enclosures – CNC milled to exact specifications for unique builds.

Many designs also feature detachable plates, internal weight blocks for stability, and anodized finishes for extra durability and style. In short, aluminum cases offer an unmatched blend of function, longevity, and aesthetics that plastic or acrylic simply can’t deliver.