Aluminum CNC Prototyping

Prototype CNC Machining for Custom Aluminum Parts

CNCALPARTS is a precision machine shop based in Shenzhen, China, specializing exclusively in custom aluminum components. We support engineers and procurement teams through the full lifecycle of a part, starting with rapid prototype CNC machining and scaling seamlessly into low-volume and batch production.

Because we machine only aluminum, our tooling, cutting parameters, and workholding strategies are optimized for this specific material. This focus minimizes deformation in thin-wall parts, ensures consistent surface finishes, and allows for tighter control of dimensional accuracy across production runs.

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Minimum Order: 1 pc
Tolerance: ±0.01 mm
Axes: 3 / 4 / 5
Material: Aluminum only

Precision Prototyping and Design Validation

Our prototype service is designed for rapid design evaluation and functional testing. Prototypes are often the first physical iteration of a design, so they must accurately reflect the performance of the final production part.

Fast Turnaround

We prioritize efficient setups to move your designs from CAD to physical parts quickly.

Design for Manufacturing

We review your 3D models and drawings before cutting. If we spot features that may cause distortion or stress, or areas where cost can be reduced without sacrificing performance, we communicate this early.

Material Accuracy

We work with standard aluminum grades such as 6061, 7075, and 2024 to ensure your prototype behaves exactly like your production components.

Seamless Scaling

Once your prototype is approved, our production workflow is already established. We transition your project to small-batch or full production without the need to requalify a new supplier.

Aluminum Machining Capabilities

We utilize 3-axis, 4-axis, and 5-axis CNC milling and turning centers to manufacture complex geometries, including heat sinks, enclosures, brackets, and structural components.

Quantities span from single prototypes through low-volume and batch production runs.

Capability	Specifications
Primary Material	Aluminum Alloys Only (6061, 6063, 6082, 7075, 2024, 5052, 5083)
Machining Types	CNC Milling (3/4/5-Axis), CNC Turning, Turn-Mill
Max Milling Size	1000 × 600 × 500 mm
Max Turning	Ø300 mm (Diameter) / 500 mm (Length)
Tolerance	Down to ±0.01 mm
Hole Diameter	Down to Ø1.0 mm
Wall Thickness	Down to 0.5 mm
Surface Roughness	Ra 0.8–3.2 μm
Quantities	1–10 (Prototype); 10–500 (Low-Volume); 500+ (Production)

Specialized Aluminum Expertise

Aluminum is prone to specific machining challenges: internal stress release, thermal expansion, chip evacuation, and surface marking. General machine shops that handle various metals often treat aluminum as a secondary material.

At CNCALPARTS, aluminum is our only focus, which allows us to master the details that keep prototype and production parts consistent.

Deformation Control

Managing thin-wall and large-pocket geometries to maintain flatness and parallelism.
Surface Integrity

Achieving cosmetic finishes that are ready for anodizing or powder coating without secondary rework.
Thread Integrity

Precision tapping for critical assembly points.
Complex Geometries

Utilizing 5-axis machining to reduce setups and improve accuracy on intricate brackets and housings.

Surface Finishing Options

We provide comprehensive finishing services to meet your functional and aesthetic requirements.

As Machined

Clean, natural surface finish.

Bead Blasting

Provides a uniform, non-reflective matte appearance.

Anodizing

Clear, black, and custom color anodizing for corrosion resistance and aesthetics.

Hard Anodizing

For applications requiring increased surface hardness and wear resistance.

Brushing & Polishing

For specific cosmetic surface requirements.

Powder Coating

Durable, protective, and decorative finish.

Quality Control & Inspection

Reliability in prototyping and production requires rigorous inspection. We verify every part against your technical drawings, 3D models, and tolerance requirements.

Documentation

We provide Dimensional Inspection Reports and First Article Inspection (FAI) reports upon request to support your quality assurance process.

Inspection Workflow

Dimensional Verification

Using CMM, height gauges, micrometers, and bore gauges.
Thread & Fitment

Testing with thread gauges and pin gauges.
Surface Analysis

Roughness testing to ensure compliance with finish specifications.

Partner with CNCALPARTS

We serve industries that demand high precision and consistent quality, including robotics, automation, optics, and mobile electronics. We are structured to work directly with engineering and procurement teams who value clear communication, technical competence, and a dedicated aluminum manufacturing partner.

Prototype quantity from a single piece

±0.01

mm tolerance down to precision level

5-Axis

Complex geometry in fewer setups

500+

Production quantities supported

Ready to start your project?

Send your STEP/STP files and PDF drawings for a prompt review and quotation. Our team reviews manufacturability, material grade, and tolerance requirements before quoting.

Email: info@cncalparts.com

Phone:

Address:

CNCALPARTS

Aluminum CNC Machining Specialists