Milling Services for Custom Parts
CNC milling is a core part of our machining capabilities, suitable for a wide range of custom parts that require flat surfaces, slots, pockets, hole patterns, and complex outer profiles. We support projects across different development stages, providing machining solutions based on material properties, dimensional requirements, and functional goals to help improve design-to-production efficiency.
Backed by practical shop-floor execution, process control, and quality management, we focus not only on machining accuracy but also on production stability and part consistency. Through close coordination between engineering and manufacturing, we help customers move more smoothly from drawings to finished parts, with better support for quality, lead times, and overall project execution.
Customized CNC Milling Solutions
We provide high-precision Customized CNC Milling Solutions tailored to your specific project needs, from simple 3-axis parts to complex 5-axis geometries. Leverage our expertise to optimize quality, reduce production costs, and accelerate your time-to-market.
3-axis CNC milling
4-axis CNC milling
5-axis CNC milling
Flexible CNC Machining Solutions
From rapid prototyping to low-volume production, we provide flexible CNC machining solutions tailored to your project stage. Our engineering team works closely with customers on DFM feedback, material selection, and process planning to deliver precision parts with consistent quality and reliable lead times.
Rapid Prototyping
Low-Volume Production
Material
| Material | Common Machinable Grades |
|---|---|
| Stainless Steel |
303 304 316L 410 17-4 PH Duplex 2205 |
| Carbon Steel & Alloy Steel |
1018 1045 4140 4340 D2 Tool Steel A2 Tool Steel P20 Mold Steel |
| Aluminum Alloys |
2024 5052 6061 6082 7050 7075 |
| Copper, Brass & Bronze |
C360 Brass Bronze Beryllium Copper Copper (C110 / T2) |
| Engineering Plastics |
Acetal (POM) Nylon PEEK PTFE UHMW-PE PVC Polycarbonate ABS |
Surface Finish Options for CNC Milling
We offer common surface finishing options for CNC milled parts to improve appearance, corrosion resistance, wear performance, and overall end-use suitability. Available finishes may vary depending on material type, part geometry, and project requirements.
As Machined
Anodizing
Black Oxide
Sand Blasting
Plating
Polishing
CNC General Tolerance
| Parameter | Metric | Imperial |
|---|---|---|
| Maximum Part Size | 1000 × 500 × 500 mm | 39.4 × 19.7 × 19.7 in |
| Minimum Part Size | 5 × 5 × 5 mm | 0.2 × 0.2 × 0.2 in |
| Minimum Feature Size | Hole: Ø1 mm Wall: 1 mm* |
Hole: Ø0.04 in Wall: 0.04 in* |
| General Dimensional Tolerance | ±0.05 mm | ±0.002 in |
| Flatness | As low as 0.05 mm* | As low as 0.002 in* |
| Perpendicularity | As low as 0.05 mm* | As low as 0.002 in* |
| Typical Surface Finish | Ra 1.6–3.2 µm | Ra 63–125 µin |
* Depending on material, part geometry, and machining setup.
Why Choose Our CNC Milling Service
What is CNC Milling?
CNC milling is a precision machining process that uses rotating cutting tools to cut and remove material. Unlike CNC turning, where the workpiece rotates, in milling the part is typically held stationary. Controlled by a computer, the cutting tool can move along multiple axes to precisely carve out a wide variety of complex shapes, flat surfaces, grooves, and holes. This process is a cornerstone of manufacturing due to its extreme flexibility and is widely used to produce non-cylindrical parts and molds.
Ready to start your CNC machining project?
Upload your drawings and get DFM feedback and a quote within 1 business day.
Advantages of CNC Milling
High Accuracy for Complex Features
CNC milling can produce parts with precise dimensions, flat surfaces, slots, pockets, and hole patterns that are difficult to achieve consistently through manual machining.
Flexible Machining for Various Geometries
Because the cutting tool can move across multiple axes, CNC milling is suitable for a wide range of part shapes, from simple flat components to more complex structural parts.
Efficient for Prototypes and Production
CNC milling is suitable for both prototype development and repeat production, helping improve machining consistency and production efficiency.
Typical CNC Milling Applications
CNC milling is widely used in industries that require accurate dimensions, stable flatness, and repeatable machining quality. It is commonly applied in automotive, electronics, industrial equipment, and tooling projects for a wide range of custom machined components.
Automotive brackets, mounting parts, and structural components
Electronic housings, covers, and enclosure parts
Precision plates, bases, and fixture components
Mold inserts and tooling-related parts
Machine parts with pockets, slots, and hole patterns
Custom aluminum and steel components for industrial equipmen
CNC Milling FAQ
What information do you need to prepare a CNC milling quote?
To prepare a quote for CNC milled parts, we usually need:
- 2D PDF and/or 3D models (STEP/IGES/STP)
- Material or grade
- Required quantity (prototype, small batch, or production)
- Surface finish and any post-treatment (anodizing, plating, polishing, etc.)
- Critical dimensions or key tolerances
- Any special requirements such as inspection reports, packaging, or labeling
If you only have a sample or rough drawing, you can also send it to us and our engineers will help review the project.
What parts are best suited for CNC milling?
CNC milling is well suited for prismatic parts, housings, plates, brackets, covers, fixtures, and other components with flat surfaces, pockets, slots, holes, and complex contours.
For parts that combine milled features with turned features, we can also review the most practical machining route based on the drawing.
What materials are available for custom CNC milling?
We commonly machine a wide range of materials for CNC milling, including:
- Aluminum alloys (such as 6061, 6082, 7075)
- Stainless steels (such as 304, 316, 17-4PH)
- Carbon steels and alloy steels
- Brass, bronze, and copper
- Engineering plastics such as POM, PEEK, PTFE, nylon, and ABS
If you have a special material requirement, contact us and we will check machinability and lead time.
What tolerances can you achieve for milled parts?
For standard CNC milled parts, we typically work to:
- General tolerances: ±0.05 mm
- Tighter tolerances on key dimensions on request, after DFM review
The achievable tolerance depends on part geometry, material, wall thickness, clamping strategy, and inspection method.
Can you support both prototypes and low-volume production?
Yes. We support CNC milling projects from rapid prototyping to low-volume production.
This allows customers to validate designs first and then move to repeatable production with the same machining support and quality control process.
Can you provide inspection reports, and will my drawings remain confidential?
Yes. We can provide inspection documents such as CMM reports, FAI reports, and material certificates on request.
All customer drawings, models, and related data are treated as confidential and are only used for manufacturing your parts.