CNC milling service
Source custom parts with our CNC milling services provided by our network of specialized manufacturers. Source custom CNC milling parts using more than 50 different metals and plastics, available in more than 15 surface finishes. Tolerances down to ±.0008.”
What is CNC milling?
CNC milling uses rotating cutting tools to remove material from a workpiece and produce finished components. The process is suitable for many metals and engineering plastics and can create detailed features with controlled dimensions. Our in-house engineering team reviews geometry, tolerances, material, and surface-finish requirements before confirming the machining plan.
Maximum part size for 3- and 3+2-axis CNC milling
There are several types of CNC milling machines, each with its own distinct maximum part size. 3-axis and 3+2 axis machines have the lowest start-up costs and can produce parts with relatively simple geometries.
3-axis milling
Size | Metric units | Imperial units |
|---|---|---|
Max. part size for soft metals [1] & plastics | 2000 x 1500 x 200 mm 1500 x 800 x 500 mm | 78.7 x 59.0 x 7.8 in 59.0 x 31.4 x 27.5 in |
Max. part for hard metals [2] | 1200 x 800 x 500 mm | 47.2 x 31.4 x 19.6 in |
Min. feature size | Ø 0.50 mm | Ø 0.019 in |
[1] : Aluminum, copper & brass [2]: Stainless steel, tool steel, alloy steel & mild steel |
3+2 axis milling
Size | Metric units | Imperial units |
|---|---|---|
Max. part size for soft metals [1] & plastics | 2000 x 1500 x 200 mm | 78.7 x 59.0 x 7.8 in |
Max. part for hard metals [2] | 1200 x 800 x 500 mm | 47.2 x 31.4 x 19.6 in |
Min. feature size | Ø 0.50 mm | Ø 0.019 in |
[1] : Aluminum, copper & brass [2]: Stainless steel, tool steel, alloy steel & mild steel |
Maximum part size for 5-axis CNC milling
The more advanced of the milling machine family, 5-axis centers can produce parts with more complex geometries. These machines require fewer machine setups so they are more productive.
Size | Metric units | Imperial units |
|---|---|---|
Max. part size for all materials | 2000 x 1500 x 200 mm | 78.7 x 59.0 x 7.8 in |
Min. feature size | Ø 0.50 mm | Ø 0.019 in |
Available materials for CNC milling
Metals
A wide range of metals for CNC machining, with applications in multiple industries. Ideal for both one-off prototypes and end-use custom parts.
Plastics
A wide range of plastics for CNC machining, with applications in multiple industries. Ideal for both one-off prototypes and end-use custom parts.
CNC milling surface finishes
Improve your part’s performance by selecting high-quality surface finishes that enhance the roughness, hardness, chemical resistance and cosmetic features of your finished component.
CNC milling tolerances
We follow ISO 2768 standards for CNC machining.
Limits for nominal size | Plastics (ISO 2768- m) | Metals (ISO 2768- f) |
|---|---|---|
0.5mm* to 3mm | ±0.1mm | ±0.05mm |
Over 3mm to 6mm | ±0.1mm | ±0.05mm |
Over 6mm to 30mm | ±0.2mm | ±0.1mm |
Over 30mm to 120mm | ±0.3mm | ±0.15mm |
Over 120mm to 400mm | ±0.5mm | ±0.2mm |
Over 400mm to 1000mm | ±0.8mm | ±0.3mm |
Over 1000mm to 2000mm | ±1.2mm | ±0.5mm |
Over 2000mm to 4000mm | ±2mm | |
*Please clearly indicate tolerances for nominal sizes below 0.5mm on your technical drawing. |
CNC milling design guidelines
Check the recommended and technically feasible values for the most common features encountered in CNC machined parts.
Feature | Recommended size | Feasible size |
|---|---|---|
Min. feature size | Ø 2.5 mm | Ø 0.50 mm |
Internal edges | R 8 mm | R 0.25 mm |
Minimum wall thickness | 0.8 mm (for metals) 1.5 mm (for plastics) | 0.5 mm (for metals) 1.0 mm (for plastics) |
Holes | Diameter: standard drill bit sizes Depth: 4 x diameter | Diameter: Ø 0.5 Depth: 10 x diameter |
Threads | Size: M6 or larger Length: 3 x diameter | Size: M2 |
We maintain high standards for CNC milling
We manufacture custom parts in our own factory according to confirmed drawings, materials, tolerances, and production requirements.
Surface-finish options can be reviewed according to the material and appearance requirements of your project.
Our quality team performs dimensional and visual inspections using calibrated equipment where applicable.
Inspection reports and other quality documentation are available on request.
- Get your quote within 48 hours
- Samples available in 7 days
- Free drawing modification
- Free sample making