Remix of this thingiverse model
The original would fall over sideways unless the wheel was perfectly aligned. I gave it a wider base and changed the bolt holes to all be M4x30mm, shorter bolts will also work.
Print the sides with the inside face (largest flat side) down on the bed with a brim to prevent warping.
I used a 0.8mm nozzle, 0.5mm layer height, 0.96mm line width, 3 perimeters, and 50mm/s.
The author hasn't provided the model origin yet.