I wanted people to know there is a design flaw in the 20mm V-Slot Gantry Plate. Link You can't mount a nema 17 stepper to it the way it is made. Even though is shows it in the examples you can't (at least not with out some alterations) and where they have the motor plate placed the holes don't even line up. 1st issue is the edge of nema 17 motor plate runs right through the center of the wheel bolt heads. Download the More linear belt examples_3a.skp file located here Even if you could bolt it where it is shown the motor would be cockeyed. 2nd issue is the motor plates shown mounted location. The holes don't even line up. The plate would have to shift down where it would hit the other 2 bolts heads and the belt is too close to the rail. So shifting up is the only real option. I have a fix to make it work but it's not super pretty.