Ender 3 (pro) filament guide wheel

thingiverse

This was my first design project. It is based around a bearing that I had in my workshop with a 26mm OD and 10mm ID, you will also need an M5 x 20 screw and nut. It was easy to fit using the existing screws on the lead screw nut. The guide wheel itself is made of two copies if a half wheel so that there is no need for supports. The two halves can be glued together but the bearing is an interference push fit that hold both halves in place without glue.