So forever I have been trying to get my cnc machine working. I am using mach 3. I have tried setting up the spped of the movement of the access of anywhere between 800 and 1200mm per minute. I have also made my acceloration between 5 and 10% the speed. When I manually tell the x or the x or the z to move it all seems fine. But when I run a small program with lots of moves the machines has lots of problems and I loose steps and the machine seems to shutter. I am running the steppers at 1/2 step and have the step and dir pulse set at 15 each. I have 3 power supplies,1 for each y and 1 total for the x and z. I also have a seperate 24 volt one for the Break out board, I do notice that the voltage starts to go down on the powere supples as they go on. Any ideas ????