Originally Posted by
grubscrew
my current z settings under motor tuning is 250ipm with a 30 accel. The problem is strange as when running the z axis by itself (program runs up.5 back to zero, up to .5 back to zero,) 1500 times i see absolutely no change in position, the problem only presents when a larger code is ran.
the tests code was ran at 100ipm as thats what the 2.5d was set at (350ipm 100 plunge)
I just ran 10 minutes of the same code with no gas assist, at the end there was still no variance in positioning. (I even tried leaning on and applying a fair amount of weight to the z carriage to try and make it skip)
right now after reading the warp 9 forums a little bit, one big thing i noticed is that the default setting in the smooth stepper general config page all the axis are set to 256khz . From my understanding if they are higher than needed it effects accuracy.
from the math for my axis :
Steps/Unit * Units/Min = Steps/Min
Steps/Min / 60 = Steps/Second (or Max Step Frequency)
4010*250(max) = 1,002,500
1002500/60 = 16,708
16,708/1000 = 16.708 KHZ
math for x and y was around the 20 khz.
that being said I set all the axis to the lowest setting (32khz) and am in the midst of checking all the axis calibration and backlash ( apparently required after changing frequency however have not found any discrepancy's yet)