Advanced45 min

Custom post-processor

Every controller has its quirks. This walkthrough tunes a post-processor so the exported G-code runs cleanly on your specific machine.

Before you start

1
Start from the closest post
Pick the shipped post-processor nearest to your controller as a base rather than starting from a blank slate.
2
Compare the output
Export a short program and compare it line by line against a known-good program from your machine to spot the differences that matter.
3
Adjust the output rules
Tune the program header and footer, tool-change block, coolant codes, and coordinate formatting to match what your controller expects.
Tip: Change one thing at a time and re-export. It is far easier to isolate a bad block that way.
4
Dry-run on the machine
Load the tuned program and run it above the stock with no cutting to confirm the controller accepts every block and moves as intended.
5
Save the post
Once the output is clean, save the tuned post so every future job for that machine exports correctly by default.

A reusable, controller-specific post-processor that produces clean, ready-to-run G-code for your machine.

5-axis CAM walkthrough

Writing better prompts

Open a workspace and build it as you read. It runs in your browser — no install required.