New Autoleveling PCB software

[HankMcSpank]

Great work! I actually bought cnc-usb software as Andrej (the author) agreed to integrate Z probing to help with pcb milling etc..

A few points to note when Z probing...

In case it's not obvious, you need a very accurate Z axis when using this probing technique ...especially if you are probing a lot across the stock - because any Z backlash will seriously affect the measurements (& more importantly - the outcome!) My small CNC machine only uses threaded rod & modest nuts...I got poor results initially due to too many probe points in conjunction with backlash errors - best to probe as little as you think you can get away with.

It's still a good idea to level your bed.... pcb milling is all about minimizing the errors (cause when your V cutting tip is only 0.2mm, every little bit of Z accuracy counts)

Be sure to probe to the g code extremeties...most 'divergences from the mean' are due to clamping at the edges (& the inevitable bowing up...albeit small - in the centre)