CR-10 Flexion bracket
thingiverse
This bracket allows for easy installation of a flexion extruder on your CR-10. Ensure you have a pass-through coupler for the bowden tube to ensure proper contact with the flexion, which prevents filament bending and escape from the extruder. I personally use: https://www.amazon.com/gp/product/B01IB81IHG However, any coupler that allows for pass-through of the tube will suffice. To verify correct placement, cut a 60° angle on the PTFE tube facing the Flexion drive unit. This tube should be pushed against the nip point with the cam in position 4.
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