CNC machining cost is driven mainly by machine time, material, the number of setups, tolerances, finishing and order quantity. Because every part is different, an accurate price requires a quote based on your drawings.
Main Cost Drivers
| Driver | Effect on cost |
|---|---|
| Material | Raw material price and machinability (e.g. titanium vs aluminum) |
| Machine time | Part complexity, volume of material removed, machine type |
| Setups | Each re-clamping adds setup and programming time |
| Tolerances | Tighter tolerances need slower cutting and more inspection |
| Finishing | Anodizing, plating and coating add process cost |
| Quantity | Setup and programming costs are shared across more parts |
How to Reduce Cost
- Choose an easily machined material where possible
- Relax non-critical tolerances
- Design for fewer setups
- Order larger batches when practical
- Request a DFM review
Frequently Asked Questions
Why is the unit price lower for larger quantities?
Programming, fixturing and setup are one-time costs. Spread over more parts, they add less to each unit.
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