CNC lead time is rarely just ‘machine time.’ It is the sum of several steps, and the longest one sets your date.
What adds days
- Material availability: exotic grades may need ordering.
- Complexity: more setups and longer cycles.
- Finishing: anodize, plating, or heat treat add external queue time.
- Inspection: CMM and first article add measurement time.
- Shop load: a full queue pushes your start date out.
How to shorten it
- Use readily available materials (6061, 304).
- Finish-machine critical faces after heat treat, not before.
- Bundle finishing with a shop that does it in-house.
- Give a realistic (not urgent-unrealistic) target so planning is honest.
FAQ
Typical prototype lead time? Often 3–7 business days for common materials.
What stretches it most? Out-of-stock material and external finishing. Plan early via engineering review.
