I am very happy that you could use GrblGru for your lathe.
I also hope that I will finally get to rename the axis designations soon.
To your question. Here's what I do on my machine:
- Turning of a cylinder with any diameter
- Measurement of the created diameter with the caliper gauge
- Enter the radius of the diameter in the Y-axis from the program
- Press the' Origin' key to set the starting diameter.
Please let me know if you have any questions or if sth. doesn't work as it should.
In this case you can also send me a PM with an email address.