Graham, I realized today that the Mach3 that I have has tool length compensation on the main screen, and put in my tool dia 1/16, ran the program and it worked great. I tried to run several other programs, and sometimes good, sometimes crazy off track. Reload instead of rewind seems to take care of that problem. When you tell machine to home, x and y seems to work, but z just goes up till out of travel.I am new to this software and any advise that you can give will be appreciated. The software that worked the old controller was very simple and you can see it @
www.minitech.com/software/download/programs.htm. I purchased this mill 6 yrs ago from Minitech, and had it upgraded because of board failure, and the Minitech people did not know how to compensate for tool dia.!!!!!