Greetings from Estonia, and I'm sorry in poor English language.

Building a new CNC Plasma. YouTube is a video where the torch goes against the material, and then rises up and will arson.
Home built CNC plasma table Mach3 - YouTube
How can this be done or what the program can do it.
Can this be done without electronic height adjustments (THC)? I do not believe that all self-builders have have bought it at the beginning.
Can anyone give a hint where this disscussed. There is still one problem. where I restart computer then engine will not start. Settings pin and port fain and led in my controller work rightly. I use Vista and Mach3.

Please help.