topic Re: Centroid Router Post modification help in HSM Post Processor Forum

Centroid Router Post modification help

bryanPK6CP — Sat, 26 Jul 2025 22:27:48 GMT

I use G28(router tool change home position) to bring the spindle to a spot I can reach, as the machine table is 6ftx10ft.

The question is how to alter the post to fix a few details. Before each tool change the post issues a G28, but it adds Z0. which causes the tool to dive back to the work surface before moving to the G28 position. How can I change it to just "G28", not "G28 Z0."

Similiarly at the programs end I get another "G28 Z0.", then G90 on another line followed by "G28 X0. Y0." One "G28" would do at the programs end.

Thank you.

Re: Centroid Router Post modification help

AdamKunzo — Mon, 28 Jul 2025 20:22:16 GMT

Attached modified post processor that generates only G28.

Alternatively, if you switch Safe Retracts from G28 to Clearance Height, G28 will no longer be generated, and the toolpath will start and end at the clearance height set in Fusion.

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Re: Centroid Router Post modification help

bryanPK6CP — Tue, 29 Jul 2025 15:09:48 GMT

Thank you Adam, very much appreciated. BTW I using HSM in soildworks. I wish Autodesk supported it better though.

Re: Centroid Router Post modification help

bryanPK6CP — Wed, 30 Jul 2025 20:43:31 GMT

I seriously doubt Centroid's Acorn controller runs Mach3. I switched to Centroid to get away from Mach3! In any case the Centroid post works great, I just needed help making a tweak.