CNC Post-Processor Verification: A Shop Checklist
Reduce programming surprises between CAM and the actual machine.
The details are easier to manage when you separate the decision into a few specific checks. This guide provides a focused framework to use alongside primary documentation and the site's longer reference pages.
Know exactly what is being posted
Record the machine, controller family, software version and the exact post-processor revision. A post that works for one shop configuration may emit different canned cycles, tool-change calls or units than another machine requires.
Review the setup before running code
Confirm work offsets, datum location, units, tool numbers, tool-length offsets, spindle directions and clearance planes. Compare simulation assumptions with physical clamps, stock and machine travel. A clean simulation is not proof that a setup is safe.
Follow a controlled test procedure
Use the machine manufacturer’s approved verification method and shop procedures. Have a qualified operator review output before a supervised dry run. Never rely on a generic checklist as a substitute for the controller documentation or workplace safety rules.
Document what passed
Record a known-good program, the part it produced and any differences found. Maintain the post revision with other shop configuration files so a future update can be checked against a tested baseline.
Before you act
- Check current terms or official documentation where the details can change.
- Keep a copy of your measurements, notes or source material.
- Use the linked detailed guides when you need more context.