The search for a free new post processor is often driven by budget constraints, but let’s separate reality from myth.
Never run G-code from a downloaded, untested post processor on a machine with a tool in the spindle. Always air-cut first.
If you are stuck and can't find a post in the library, your local GibbsCAM Reseller is your best resource. While this isn't "free," it is a service cost. A reseller can modify an existing post to match your specific machine kinematics (like tool changers, probe cycles, or rigid tapping).
Finding a "free download" for a specific machine typically happens through official channels if you are a licensed user:
