This part allows you to mount 180 dc motor.
I printed 2 of them with 0.5mm nozzle, one using Prusa Slicer and second on Cura(on photos). On Prusa Slicer it came perfectly, however on Cura it has gaps.
Don't forget to scale it up by 3.5-4%, because of the shrinkage.
You have to scale it up by 4% - 4.5%