Hello all, So am testing my ox build and I am noticing something. First I am using a Hobby cnc pro driver board with mach3. My motors are wired in unipolar mode. I know most here use a gbrl shield which is a bi polar driver. Should that make a difference? Does anyone here using a Gbrl shield have problems with there gantry racking? Charlie
Thanks for the replys. I can see when I jog the y axis that one motor steps before the other and then they both start moving.