Is this 3D model free to download?

Yes, Filament Width Sensor Prototype Version 3 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 flipper, 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 Width Sensor Prototype Version 3 3D printable model by flipper

Filament Width Sensor Prototype Version 3 photo 1

Filament Width Sensor Prototype Version 3 photo 2

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Filament Width Sensor Prototype Version 3

Source: Thingiverse by flipper

The Filament Width Sensor Prototype Version 3 is a free printable 3D model from Thingiverse by flipper. This is a prototype for an optical sensor that measures the width of plastic filament in real time as it goes into a 3D printer or a filament extruder. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

1,602 saves Source: Thingiverse Updated 2026-10-17 License: CC-BY-NC · non-commercial 11 makes Category: 3D Printer

Tags: 3D printing, diy, electronics, Filament Extruder, sensor

About this model

This is a prototype for an optical sensor that measures the width of plastic filament in real time as it goes into a 3D printer or a filament extruder. It is prototype #3 (other 2 are on Thingiverse as well ). The idea is that with a real-time width measurement the 3D printer could compensate the extruded flow for changes in filament width. Also if there is variation between spools of filament, there is no need to calibrate for that when slicing. The g-code is independent of the filament diameter. For filament extruders, the measured width can be used as feedback in the extrusion process.This version includes a custom designed pc board as well as a housing. A version of Marlin is modified to use the sensor data. The sensor outputs a voltage in milimeters (3v=3mm) that is shown on the voltm…

Frequently asked questions

Is this 3D model free to download?: Yes. Filament Width Sensor Prototype Version 3 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 flipper.
Who made this model?: Designed by flipper, 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.