Size & Tolerance Standard
We can process more than 50 kinds of metal and plastic materials, Please refer to the following table for specific available material models.
Maximum Dimensions
Maximum depth that can be milled is 2 in. (50.8mm) from either side of part. For specific milling dimensions by material, see maximum part extents for machining.
| Material | US | Metric | |
| 3-axis |
|
10 in. x 7 in. x 1.75 in. | 254mm x 178mm x 44.5mm |
| 3-axis |
|
10 in. x 7 in. x 2.75 in. | 254mm x 178mm x 69.9mm |
| 3-axis |
|
10 in. x 7 in. x 3.75 in. | 254mm x 178mm 95.3mm |
| 3-axis** |
|
10 in. x 14 in. x 1.75 in. | 254mm x 356mm x 44.5mm |
| 3-axis** |
|
22 in. x 14 in. x 0.75 in. | 559mm x 356mm x 19.1mm |
| 3-axis** |
|
22 in. x 14 in. x 3.75 in. | 559mm x 356mm x 95.3mm |
| 5-axis |
|
2.6 in. x 2.9 in. x 3.9 in. | 66mm x 73mm 99mm |
*Hard metals: Titanium (6Al-4V), Stainless Steels (303, 304, 316, 17-4PH), Alloy Steel (4140), Carbon Steel (1018)
**Denotes two-sided machining only
Minimum Dimensions
| US | Metric | |
| Size | 0.25 in. x 0.25 in | 6.35mm x 6.35mm |
| Nominal Thickness | 0.040 in. | 1.02mm |
Tolerances
Typically, Protolabs can hold a machining tolerance of +/- 0.005 in. (0.13mm). Part features are recommended to be thicker than 0.020 in. (0.51mm) in all regions and a nominal part thickness above 0.040 in.