Flex Filament Extruder Upgrade 3D printable model by konrad_3d

Flex Filament Extruder Upgrade

Source: Thingiverse by konrad_3d

The Flex Filament Extruder Upgrade is a free printable 3D model from Thingiverse by konrad_3d. This is based on the design by valpap. You can download the STL file from the original listing below and print it at home.

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108 saves Source: Thingiverse Updated 2026-04-16

Tags: Flex, Filament, Extruder, Upgrade

About this model

This is based on the design by valpap. His design worked great for me except for de-rectractions with flexible filament. The filament manged to escape the intended filament path through the groove in the bearing. I added a bead/bulge to block the groove in the bearing. Since then I didn't have any problems with flexible filament. After printing, I drilled the filament path out with a 2 mm drill. This gives a smooth filament path. The coupling thread can be inserted without any postprocessing.

Frequently asked questions

Is this 3D model free to download?
Yes. Flex Filament Extruder Upgrade is free to download from Thingiverse. Click the "Download free STL" button above to open the original listing.
Where is the STL hosted?
The download is hosted by Thingiverse, not by Thinger. We link you directly to the original listing by konrad_3d.
Who made this model?
Designed by konrad_3d, published on Thingiverse. Please credit the creator when sharing your print online.
Can I print this at home?
Yes. This model is intended for home FDM and resin 3D printers. Check the original listing for suggested print settings like layer height and supports.

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