The motors have made a difference, the machine seems to be smoother and I just cut a large pocket 10" x 9.25", I used a 2 flute .500 end mill, .006 cut, 40 IPM, 50% stepover, the cut was extremely smooth and consistent. Well, up until my Smoothstepper lost communication with Mach. This happened 3 times in a row, so I installed my new parallel port card and could not get any movement. I got out the old PC that I was using a few weeks ago that was giving me some problems. I managed to get through the project, but there where 3 times that I saw steps lost. I was able to get back on track and get the job done, but I had to work until very early in the morning. I need to get my new PC running, I still have one job that I have to get done by Monday. Hopefully I can find the mistake that I made and get back on track. The port address is something weird like cc00. Back to the motors, the new motors did heat up to 126 degrees, but they would cool down. If anybody is interested I got them at
www.anaheimautomation.com. I paid $245 for a Nema 42 motor.