To help extruder with super flexible TPU you need to get rid of the ptfe tube and place spool above printer, so it can easily extrude filament.
so i combined some cool models and made this remix with roller.
Now Such TPU as FD-Plast can be printed with speeds 30-60mm/s
For assembly you need:
Can also be found on printables
https://www.printables.com/model/668224-creality-k1-top-spool-holder-with-roller
Guide_mount.STL | 176.7KB | |
Guide_Two-sided.STL | 1.2MB | |
k1-top-spool-holder-v2-side-supports.stl | 843.1KB | |
Rollder_separated_with_pin.stl | 418.6KB | |
Roller.STL | 344.4KB |