Is this 3D model free to download?

Yes, Filament Runout Sensor 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 barrettford, 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 Runout Sensor 3D printable model by barrettford

Filament Runout Sensor

Source: Thingiverse by barrettford

The Filament Runout Sensor is a free printable 3D model from Thingiverse by barrettford. I bought some microswitches from Aliexpress for a filament runout sensor, but I couldn't find one on thingiverse that I was sure would fit. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

263 saves Source: Thingiverse Updated 2026-10-04 License: CC-BY · commercial OK 3 makes Category: 3D Printer

Tags: 3D Printer Parts, filament, Filament runout, Runout sensor

About this model

I bought some microswitches from Aliexpress for a filament runout sensor, but I couldn't find one on thingiverse that I was sure would fit. So I decided to make my own. For this project you will need: 1x micro switch with lever arm 1x 4cm or longer length of PTFE tubing 2x M2 or M2.5 bolts of 10mm length or longer (whichever fit your microswitch better. If using the switches I've linked, the M2.5s fit better) 2x nuts that match the bolt diameter Optionally 2x washers that match the bolt diameter

Frequently asked questions

Is this 3D model free to download?: Yes. Filament Runout Sensor 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 barrettford.
Who made this model?: Designed by barrettford, 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.