After a couple weeks using my Ender3 I quickly realized why there are so many filament guide accessories. The filament entering the feed gear housing was quickly cutting its way through the stock guide. After a lot of searching for a guide with a 3D printed bearing that would work smoothly I gave up and designed my own using a re-mix of Emmett's Gear Bearing. This bearing is by far the smoothest running 3D printed bearing I have found and turns out it works great with an added v-groove as a filament guide. If you have just started using an Ender3 printer give this thing a try.
The bearing must be printed "WITHOUT" support or it will not work. Supports are required for the support arm.
Assemble and print!
- Print all three parts
- Remove support material from the support arm
- Snap the bearing onto the support arm hex shaft
- Slide the assembled support arm into position on your Ender3 Z-axis carriage
- Use the 5mm lock pin to secure the bottom of the support arm to the existing hole in the carriage next to the Z-Axis drive motor.