I didn't see a category for Onsrud CNC routers so I thought I'd kick off my own thread.
2013 Onsrud 97M with B&R hand held Controller. It seems not too many threads on that brand controller here or anywhere else on the web that I can find.
I'm using VCarve Pro CAD/CAM.
Everything appears perfect with G-CODE and Z-zero setting at material surface. I can manually step to z-zero with controller screen and return tool to material surface, however, when running a file the z-height is ALWAYS at +.547" above the intended location.
I have been using it for awhile now by setting Z to an offset to make up the difference, but I'd like to find the real cause.