I have my machine built and its moving smooth and tight. I understand x and y but I'm a little lost on what to do with z. Where do i Start? I have a zprobe attached but have no idea what to do with it. Also in the openbuilds online gcode generator theres a slot for Z Safe Height .. is that the starting space between the bit and the top of the board? Cut Depth: Final -- i'm assuming is the thickness of the board. Please help a true newb. So anxious to get started.