Why Custom Aluminum Parts Need a Serious CNC Partner

I've been machining custom aluminum parts for over 12 years. One thing I know for sure: not all CNC shops are equal.

A custom part is not an off-the-shelf item. It's designed specifically for your application. That means the shop making it needs to understand your design intent, not just read dimensions off a print.

At AOOM Technology, we treat every custom aluminum project as a partnership.

What Counts as a Custom Aluminum Part?

Anything that isn't a standard catalog item: custom brackets for a medical device, one-off housings for a prototype, specialized heat sinks, custom robotic arm components.

These parts often have unusual geometries, tight tolerances in specific areas, and specific surface finish requirements. They need a shop that can adapt.

Design for Manufacturability: We Help You Optimize

I tell clients: "Your design might be perfect for function. Let me help make it perfect for manufacturing."

We review every custom part design before quoting. We flag expensive features and suggest alternatives that achieve the same function at lower cost.

Common DFM suggestions for aluminum:

• Increase wall thickness slightly to avoid thin-wall chatter
• Add radii to internal corners so we can use larger end mills
• Reduce unnecessary tight tolerances on non-mating surfaces
• Adjust hole sizes to standard drill sizes

Tolerance Capabilities for Custom Aluminum CNC

For custom aluminum parts, we hold these tolerances as standard:

• Linear dimensions: +/- 0.05 mm
• Hole positions: +/- 0.025 mm
• Concentricity: 0.05 mm TIR
• Flatness: 0.025 mm per 25 mm

If your custom part needs tighter, we can push to +/- 0.005 mm on critical features. We'll let you know which features drive cost and which don't.

Finishing Options for Custom Aluminum Parts

Custom parts often need special finishes. We provide:

• As-machined: natural machined surface, visible tool marks
• Bead blast: matte, uniform surface, covers minor tool marks
• Anodizing: clear, black, or custom colors (Type II and Type III)
• Powder coating: durable color finish, various textures
• Chrome conversion: for electrical conductivity requirements

Prototyping to Production: We Do Both

Many of our custom aluminum projects start as prototypes. The client needs 5 parts to test fit and function. Then, after design validation, they need 100 or 500 parts for production.

We handle this transition smoothly. The same programmer who wrote the prototype code writes the production code. The same machinist who proved out the prototype runs the production job. No handoff errors. No quality surprises.

Examples of Custom Aluminum Parts We've Made

Here are real projects from our shop floor:

• A custom camera housing for a robotics company—5-axis machined from a solid billet
• A mounting plate for a laboratory instrument—requires precision slot alignment
• A drone motor mount—lightweight with complex cooling channels
• A prototype automotive intake flange—6061 with threaded inserts

Why Companies Trust AOOM for Custom Aluminum

We deliver on time. We communicate clearly. We stand behind our work.

If there's an issue, we fix it fast. I've had clients tell me: "I wish I'd found you sooner." I'd rather you find us now.

Send your CAD files to chen@aoomtech.com for a quote within 24 hours.