Precision aluminum CNC machining
Small Part Machining for Micro Features and Tight Tolerances
Small component manufacturing requires a different approach than standard CNC milling. At CNCALPARTS, we specialize exclusively in aluminum CNC machining for miniature components used in sensors, optics, electronics, robotics, and precision instruments.
±0.01 mm
Precision tolerance
Ø1.0 mm
Hole diameter capability
0.5 mm
Minimum wall thickness
5-axis
Complex-part machining
Aluminum focused
Dedicated process control for 6061, 7075, 2024, 5052, and 5083.
Batch repeatability
Stable workholding and inspection for prototypes through production.
Why small parts are different
Miniature components demand more than scaled-down machining.
Controlled workholding
Standard clamping force can crush or distort thin parts. Custom soft jaws and vacuum fixturing secure components without inducing stress.
Thermal stability
Aluminum expands quickly under heat. Specialized coolants and optimized tool paths help prevent dimensional drift during cutting.
Micro-tool rigidity
High-speed spindles and rigid machine setups minimize vibration and tool deflection around small holes and fine threads.
Burr prevention
Near-net machining reduces burr formation at the source, limiting the need for aggressive manual finishing on intricate geometries.
Capabilities
Built for small, complex aluminum parts
We focus on the intersection of speed and precision, from sensor-housing prototypes to production runs of thousands of optical mounts.
Micro-hole drilling and boring
Hole diameters down to Ø1.0 mm with positional tolerances down to ±0.01 mm.
Fine threading
Clean, consistent thread profiles for M1.6 threads and above, supporting reliable assembly.
Thin-wall machining
Walls as thin as 0.5 mm, with process control designed to limit internal stress and warping.
Multi-axis milling
5-axis machining completes complex small parts in fewer setups, improving geometric accuracy between features.
Technical range
Standard precision specifications
These ranges summarize our standard capabilities for small aluminum components. Final feasibility is confirmed against your CAD files, drawings, material, and inspection requirements.
| Capability | Tolerance / Range |
|---|---|
| Material focus | Aluminum alloys only: 6061, 7075, 2024, and more |
| Precision tolerance | Down to ±0.01 mm |
| Hole diameter | Down to Ø1.0 mm |
| Thread size | M1.6 and above |
| Minimum wall thickness | 0.5 mm |
| Surface roughness | Ra 0.8–3.2 μm |
| Flatness / parallelism | Down to 0.02 mm |
| Maximum milling envelope | 1000 × 600 × 500 mm |
Material selection
Aluminum expertise from material to finish
We machine aluminum exclusively, maintaining a clean environment free from steel or brass particle cross-contamination. This focused process supports consistent dimensions and cosmetic quality on precision components.
6061-T6
General-purpose precision parts with excellent machinability and anodizing response.
7075-T6
High-stress applications where strength-to-weight ratio is critical.
2024
Smaller structural components requiring high fatigue resistance.
5052 / 5083
Housings and enclosures requiring weldability or specific corrosion resistance.
Industry applications
Components for high-tech sectors
Optics
Lens barrels, optical mounts, and sensor housings.
Electronics
Heat sinks, connectors, and small PCB protection enclosures.
Robotics & automation
End-effectors, grippers, and actuator housings.
Precision instruments
Calibration fixtures and measurement device components.
Quality assurance
Inspection designed for miniature features
Standard inspection equipment is often insufficient for small, tight-tolerance parts. Our measurement tools are calibrated for delicate features and critical dimensions.
Every batch undergoes a rigorous inspection process. Dimensional Inspection Reports are available upon request before shipment.
Optical CMM
Non-contact measurement for delicate, small-scale features.
Digital micro-height gauges
Verification of small-step heights and flatness.
Thread and pin gauges
Dedicated checks for fine-pitch threads and small-hole diameters.
Surface roughness testers
Confirmation of cosmetic and functional surface requirements.
Project guidance
Questions engineers ask before machining
Can you support very small holes and fine threads? +
Yes. Our standard capability includes hole diameters down to Ø1.0 mm and M1.6 threads and above. Final feasibility depends on depth, aspect ratio, material condition, and drawing requirements.
How do you prevent distortion on thin walls? +
We use custom soft jaws, vacuum fixturing where appropriate, controlled cutting parameters, optimized tool paths, and thermal management to reduce workholding stress and warping.
What files should I send for a quotation? +
Send STEP or IGES files together with technical drawings, material specifications, quantities, surface finish requirements, and any critical inspection points.
Do you machine stainless steel, brass, or titanium? +
No. We focus strictly on aluminum. This specialization enables better aluminum-specific process control, faster setup turnaround, and consistent results for small precision components.
Start a project
Partner with CNCALPARTS for your next small aluminum part
Share your design and production requirements with our team. We are ready to review your files and assess the best approach for micro-features, thin walls, fine threads, and repeatable batch production.
Email: info@cncalparts.com
Address:
Send your STEP or IGES files with your technical drawings
Include expected quantities, alloy, tolerances, surface requirements, and delivery targets so we can respond with a practical machining assessment.