Sorry to be the guy with all the new questions. But I have my build up and running. I seem to have left side drift problem. As you can see in the picture the left side of the art is pulling to the right. The right side is straight as an arrow.
The frame under the table is square (or really close), in any case it is not that far off or the right side would be off as well.
It must have something to do with the belt?
I have the mm per step set at 80 on X and Y, using a SRK Pro controller (TMC2209) and NEMA 17 steppers. I homed Y and then X before starting.
Thanks in advance for any ideas.