Improved Flexible Filament Extruder Upgrade CR10, CR10 Mini, Ender 3
byCHEPModel originally uploaded to Thingiverse at https://www.thingiverse.com/thing:3072475.
This is a remix of the joshvv Flexible Filament Extruder Upgrade that I added M6 threads to the inside hole where the coupling attaches to prevent the coupling from popping out when not using flexible filament on the printer.
I had this happen once when printing PLA so this fixes that issue as the coupling screws in very solid now.
Refernce my video for installation: https://youtu.be/az7pysnV_MY