Is this 3D model free to download?

Yes, Reciprocating Rack and Pinion 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 adafruit, 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.

Reciprocating Rack and Pinion 3D printable model by adafruit

Reciprocating Rack and Pinion

Source: Thingiverse by adafruit

The Reciprocating Rack and Pinion is a free printable 3D model from Thingiverse by adafruit. Full tutorial: Reciprocating Rack and Pinion Learn how to create an automated geared mechanism with hypnotic motion. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

101 saves Source: Thingiverse Updated 2026-10-10 License: CC-BY · commercial OK Category: Gadgets & Electronics

Tags: adafruit, crickit, Gear, mechanism, motor, robot, wheel

About this model

Full tutorial: Reciprocating Rack and Pinion Learn how to create an automated geared mechanism with hypnotic motion. Use the Adafruit CRICKIT and Circuit Playground Express to make it dance! This is a mechanism for converting rotary motion to linear oscillating motion. The gear appears to bounce back and forth as it continuously rotates. As the wheel spins, the gear turns and oscillates between two tracks. It emits clacks and sloshes sound while in motion creating the sense of white noise. The teeth engage the lower track as it rotates. When it has travels the length of the slot, the teeth clears the end of the track and catches the teeth in the upper part of the track. Adafruit Crickit for Circuit Playground Express Adafruit Circuit Playground Express TT DC Gearbox Motor 3xAA Battery hold…

Frequently asked questions

Is this 3D model free to download?: Yes. Reciprocating Rack and Pinion 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 adafruit.
Who made this model?: Designed by adafruit, 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.