here we go:
forum.linuxcnc.org/qtvcp/46615-probe-basic-in-qtdragon
btw. extra depth doesnt work also as it shoult, instead of for e.g.
2mm extra depth he makes 0mm.
On Z-minus probing, after finish probing he should 15mm rise up. but makes 17mm. he added the 2mm extra to top, but not on edge finding in depth.
I hope you understand what I mean.