Hi. Did mine with x,y,z to home on startup, home to limits then forward to a rising edge, with the option of doing this again between paths. Fit the tool, first op z goes down to a depth switch which is suprisingly acurate. I have two strips to butt the billet against, the homebrew knows where these are as well, simple to measure billet thickness and type in plus an extra input for any backing. Then press cut, homebrew applies all these to the toolpath and most of the time, nothing bad happens!