This is the Direct Extruder part I designed for the Ender 3 V2, it requires you to disassemble and reassemble the Extruder stepper motor and Bowden extruder into a Direct Drive Extruder.
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Optimized the structure, and designed the heat dissipation vent of the motor and the Zip Tie hole for bundling wires.
The tested version can successfully print the softest TPU filament I know - Filaflex 60A 1.75mm:
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The downside is that the position of the motors affects the max position of the X-axis, so I updated the Marlin firmware configuration I used to sacrifice some print range to get this.
Download Here:
https://www.thingiverse.com/thing:5855162
hey, how long should the bowden tube be cut?