I have built a fairly large custom 3d printer but I cannot get my Z axis motors to move enough. I have a gearbox on both my z motors but seem to be unable to compensate in the firmware. The motors I have are 1.8 degrees per step and have a 5.18 gear ratio. My problem is that my rods will not turn far enough to bring the z up one mm. I have tried to compensate in the repetier firmware but seem to be unable to get it right. My hardware is an arduino mega with ramps 1.4 Please help, I am willing to answer any questions.
