Flex Filament Extruder Upgrade

thingiverse

This design was inspired by valpap's work and it served me well except for one crucial issue: de-rectractions with flexible filament. The filament somehow managed to break free from the intended path through the groove in the bearing, resulting in a mess. To resolve this problem, I added a bead or bulge to block the groove in the bearing. After implementing this modification, I encountered no issues with flexible filament during printing. Following the print job, I drilled out the filament path using a 2 mm drill bit. This action created a smooth and seamless path for the filament, allowing me to insert the coupling thread without any additional post-processing steps.