Hello. New to the forum. Having an issue after a controller retro replacing analog drives with Viper75, PC and went to Mach3 (licensed). Machine is a Precix 4x8 router. Previous controller worked well in DOS, but the drive controller died, could not find a replacement, and Mach had more features so I felt it was time for an upgrade. My issue: I can post a drawing (with Cambam, also used with previous controller) that contains a circle (4") with a square in the center (2"x2") and 8- .125" parameter holes spaced equally i.e. 9, 10:30, 12 etc. around the inside of the circle. When cut (.125" end mill) my circle would be perfect but my square could be -.040 on X. If I recalibrate steps in Mach I would get the square dead on, but my circle and parameter holes are out in X. I can't get both dimensions correct at the same time. I have tried different IJ settings in Cambam and Mach along with changes to velocity and acceleration with no mentionable difference. The machine is tight and cut fine with previous controller. I have done XY ocillation test (40 reps) with a dial indicator and test allways ends up within .001 for both axis. After all these test, I wrote a program for a .125" end mill for X and Y to drill 6 holes for each at 1" apart. Oddly enough they measured approx +.080" at 6" and the incrementally closer at 1" (1" +.008), even after the dial indicator test? Recalibrated Mach and got the 6 hole measurement perfect only to find the circle test previously mentioned is way out, +.050". Uninstall/reinstalled Mach 3 times with crucial reboot. Any help is appreciated. Sorry for the long wind.  |