Why does this matter?
Choosing a CNC process is not just choosing a machine. Workholding, tool access, operation sequence and inspection strategy interact, affecting both quality and cycle time.
What should you check?
- Geometry, access, tool approach and critical form features
- Number of setups, operation sequence and programming/preparation effort
- Technical drawing, datums, dimensions and available measurement results
- Initial quantity and likely repeat or series-production volume
A practical evaluation sequence
Read the geometry in terms of tool access, workholding and datum relationships first. Then evaluate setup count, machine axes, tool strategy and inspection together; process choice should not be based on axis count alone.
Common mistakes
- Using machine-axis count as a stand-alone indicator of quality or cost
- Ignoring tool access and workholding rigidity during geometry review
- Carrying a one-off setup unchanged into repeat production
Decision rule
The best process is the one that produces the required quality repeatably with the fewest unnecessary setups and operations.
What should you send for evaluation?
- 3D CAD/mesh data, revision status and required output format
- Technical drawing, datums, dimensions and available measurement results
- Initial quantity and likely repeat or series-production volume
- Critical dimensions, tolerances and required accuracy level
Where can Gizmak help?
For prismatic parts and technical features, we assess milling against the drawing, material and quantity.
CNC milling