Is this 3D model free to download?

Yes, Bullzeye Clock 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 Zarlor, 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.

Bullzeye Clock

Source: Thingiverse by Zarlor

The Bullzeye Clock is a free printable 3D model from Thingiverse by Zarlor. The Bullzeye Clock is a penny weight driven mechanical gear clock. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

178 saves Source: Thingiverse Updated 2026-10-17

Tags: Bullzeye, Clock

About this model

The Bullzeye Clock is a penny weight driven mechanical gear clock. It is so named because the face looks like a target and the pendulum is reminiscent of an arrow. It should run for about 8-12 hours depending on your string length. Penny_weights.stl is from the MakerBot Clock Aside from the 3D printed parts you will need: 4 feet of nylon string $2.50 in pennies 1/64 stainless steel rods (~2mm) 3.5 feet 3/16 wooden dowel (~5mm) The pinions are superglued to their corresponding gear numbers but the spacers are not glued. gear1top is glued to gear1bottom and the nylon string is wrapped 1.5 times around the drum with the counterweight on the left and four penny weights on the right. Make sure gear1 is tight with the rod and rotates it while the other large gears are loose and rotate around the…

Frequently asked questions

Is this 3D model free to download?: Yes. Bullzeye Clock 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 Zarlor.
Who made this model?: Designed by Zarlor, 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.