D-bot stepper mounts with zip tie slots by Rexipus

Last crawled date: 3 years, 1 month ago

The PETG-printed mount plates on the stepper motor mounts for my D-bot would flex a little when the steppers are under belt tension, leading to the stepper being bent over a little bit so their drive shafts weren't perfectly vertical anymore. It wasn't a huge deal, but even a little angle in the stepper drive shaft toward the printer can cause the belt to bunch up on one end of the drive pulley.
I remixed this in Tinkercad by simply adding two slots (left side mount) and one slot (right side mount) to allow a large zip tie or ties to be used to secure the motor hard to the mount, preventing it from leaning over under belt tension. The reason for the different number of slots between the two was entirely practical. The mounts, and where the screw holes are on them, aren't the same between the two sides, so two slots fit on the left side, and only one slot fit on the right. One slot should be enough, though, to allow the zip ties to bear some of the torque from the X/Y drive belts so that the stepper shafts can stay perfectly vertical.
Print this however you would print the stock D-bot stepper mounts. I used PETG, 100% infill, 260 C/70 C, on my D-bot, printed at 50mm/s.