Is this 3D model free to download?

Yes, Filament Welder 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 coffee_sugar_cinnamon, 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.

Filament Welder 3D printable model by coffee_sugar_cinnamon

Filament Welder

Source: Thingiverse by coffee_sugar_cinnamon

The Filament Welder is a free printable 3D model from Thingiverse by coffee_sugar_cinnamon. A jig for welding 1.75mm PLA filament. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

11,164 saves Source: Thingiverse Updated 2026-10-17 License: CC-BY · commercial OK 16 makes Category: 3D Printer

Tags: filament, no file, no sanding, welder

About this model

A jig for welding 1.75mm PLA filament. Welded filament slides smoothly through 2mm inner diameter tubing without sanding. A PTFE tube and coil spring are required separately. -PTFE tube: Length: 40mm, ID x OD: 1.8mmx2.6mm, h ttps://amzn.to/3AWOsoN -Coil spring: Wire Diameter: 0.3mm; Outer Diameter: 3.4mm, h ttps://amzn.to/3KVjfqB When attaching the tube, bend and insert it from the inside of the donut. WHY DO YOU NEED A SPRING? When you heat the PTFE tube, it softens. Two filaments are pushed in from both sides in that state, and the tube expands at the butted part. A spring is installed to prevent this expansion. Therefore, when you choose a spring, its inner diameter should be approximately the same as the outer diameter of the tube. How to use This welder is designed to join the last fi…

Frequently asked questions

Is this 3D model free to download?: Yes. Filament Welder 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 coffee_sugar_cinnamon.
Who made this model?: Designed by coffee_sugar_cinnamon, 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.