FlexiStruder - just another remix (ender 3)

OBSOLETE - see updated version here

a remix of Flexistruder by MikeFrancies ( https://www.thingiverse.com/thing:1099016 )

I wanted to update the extruder on my Ender 3 Pro in order to be able to print flexible filaments. But why spend money on a new extruder or adapt the original one, when there are already great ideas to print something yourself?

I have adapted the original design somewhat for me:

• added the possibility to adjust the contact pressure (M8 screw)
• reusing the insert of the original extruder for better movement of the lever
• mounting the bearing with an screw and an heat threat insert
• added a BSP 1/8" thread for an PC4-M10 push-fit
• PTFE tube through the lever and the base
• some small changes to the geometry update 23.09.2021:
  I had a problem when printing very stiff filament (Green-TEC PRO Carbon).
  With many retractions the tube was pushed back and the extruder could no longer transport material. To prevent this I have used a cable tie as a quick fix.
  Maybe a compression fitting instead of the push-fit would be a better choice here.

final Printing: 
0.4 nozzle, 0.2mm layer height
4 walls, 6 bottom and top layers, infill 40% cubic
support overhang angle 60°, touching buildplate

printing A90 and A95 TPU works perfectly, that is all I wanted

included step files to easy modify

have fun!

IF SOMETHING IS NOT OK PLEASE LEAVE A COMMENT OR SEND ME A MESSAGE
(sorry, english is not my native language)

Print Settings

Printer Brand: Creality
Printer: Ender 3 Pro
Supports: Yes
Resolution: 0.2 mm
Infill: 40% cubic
Filament: Green-TEC PRO Carbon PLA