Ender 3 Wall Standoff

thingiverse

Sometimes when I move my printer and place it against the wall, I forget to check the clearance between the wall and the bed at its home position. The bed overhangs the back of the printer and the bed wiring can crash into the wall if your not paying attention. I designed these standoffs to solve that problem. They screw into the 4040 extrusion on the back of the printer so you can't place it too close to a wall. It gives you about 10mm clearance. These are hollow on the inside and have slots in the walls to save on plastic. No supports needed either. You will have to use a tap to thread the holes in the extrusion and you will need x4 M5 screws to secure these to the printer. The screw length doesn't really matter but 8mm is plenty. These are designed to fit a rubber bumper at the end. I used the old rubber feet from my Ender 3 because I had already replaced them with taller ones that use circular pieces instead. I just cut them with a razor blade to fit. Any material could work though. I printed these in PLA, 0.2mm layer height, 3 top and bottom layers, 3 perimeters and 25% infill. I designed a reinforced base into the model and it needs to be strong so I would not go lower than those settings.