Is this 3D model free to download?

Yes, Prusa MK3 Bowden Screw-on Coupling for Extruder is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by Thingiverse. Use the "Download from Thingiverse" link on this page to open the original listing and grab the file, or save it to your print queue in the free Thinger app.

Designed by zcubed, published on Thingiverse. Please credit the creator when sharing your print.

Can I print this at home?

Yes. This is a printable 3D model intended for home FDM and resin printers. Check the original listing for suggested print settings.

Prusa MK3 Bowden Screw-on Coupling for Extruder 3D printable model by zcubed

Prusa MK3 Bowden Screw-on Coupling for Extruder photo 1

Prusa MK3 Bowden Screw-on Coupling for Extruder

Source: Thingiverse by zcubed

The Prusa MK3 Bowden Screw-on Coupling for Extruder is a free printable 3D model from Thingiverse by zcubed. Area51 made a great screw-on solution for the filament sensor and tiny ptfe tube at the top of the extruder assembly which I printed immediately. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

107 saves Source: Thingiverse Updated 2026-10-13 License: CC-BY-NC · non-commercial Category: 3D Printer

Tags: bowden, mk3, Original Prusa i3 MK3, prusa i3 mk3, reverse bowden

About this model

Area51 made a great screw-on solution for the filament sensor and tiny ptfe tube at the top of the extruder assembly which I printed immediately. Then codiac2000 released a great reverse bowden solution which I needed for my filament box. I quickly mashed the two together for just the top piece. This allows a regular coupler to be screwed on to the extruder assembly and holds on to the small ptfe tube for easy removal. Use the sensor cover from Area51's design and you are good to go.

Frequently asked questions

Is this 3D model free to download?: Yes. Prusa MK3 Bowden Screw-on Coupling for Extruder is free to download from Thingiverse. Open it in the free Thinger app, or use the "Download from Thingiverse" link 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 zcubed.
Who made this model?: Designed by zcubed, 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.