Is this 3D model free to download?

Yes, The little bolt hobbit 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 elk, 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.

The little bolt hobbit 3D printable model by elk

The little bolt hobbit

Source: Thingiverse by elk

The The little bolt hobbit is a free printable 3D model from Thingiverse by elk. If you use different extruders, is a hassle to recalibrate your reprap each time you change the extruder. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

2,117 saves Source: Thingiverse Updated 2026-10-12 License: CC-BY · commercial OK 36 makes Category: 3D Printer

Tags: extruder, Gear, hobbed, hobbing, mendel, reprap, supportless, tool, useful

About this model

If you use different extruders, is a hassle to recalibrate your reprap each time you change the extruder. Therefore I decided to make my hobbet bolts much more precisely and reproducible. To gain better hobbet bolts, you need the little bolt hobbit and a proxxon micromot 50 (with some adjustment you might also be able to use any other kind of dremel-like tool). With the bolt hobbit, you can make a hobbet bolt with 32 teeth that are perfectly parallel, sharp and have the same dimensions. Furthermore it is easy to reproduce some identical bolts (that feed the exact same amount of filament per revolution to the hot end) so it is no longer necessary to recalibrate your firmware each time you change the extruder. This thing is slightly inspired by the KNRLR found here: but made much more rigid …

Frequently asked questions

Is this 3D model free to download?: Yes. The little bolt hobbit 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 elk.
Who made this model?: Designed by elk, 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.