Filament arm and bracket with rollers guides.

thingiverse

Filament top arm and lower bracket that slides onto the crossbar bracket at the extruder. You will need 1 arm, 1 bracket, 2 rollers and 4 hubs along with 2 of the 608 2RS bearing, 1 M4 x 20 and 1 M4 x 25 screws and nuts. The arm has extended front and rear fingers to keep it tight and makes it more stable. This file was created in inches, so be sure to import it as imperial units or scale it up x 25.4. Someone was looking to use the stock extruder bearing as a bearing for the roller wheels so I added some new files to use the stock bearing. You will need 2 rollers, 2 spacers and 4 hubs. Press the bearing into the roller, insert the spacer on top of the bearing and use 1 hub on either side of the assembly.