Is this 3D model free to download?

Yes, Automatic Transmission Model 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 emmett, 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.

Automatic Transmission Model 3D printable model by emmett

Automatic Transmission Model

Source: Thingiverse by emmett

The Automatic Transmission Model is a free printable 3D model from Thingiverse by emmett. Have you ever wondered how an automatic transmission works? I did, so I looked it up and then designed this desktop model. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

16,843 saves Source: Thingiverse Updated 2026-11-02 License: CC-BY-SA · commercial OK 118 makes Category: Vehicles & RC

Tags: Gear, LulzBot, model, openscad, parametric, planetary, snapfit, transmission

About this model

Have you ever wondered how an automatic transmission works? I did, so I looked it up and then designed this desktop model. It has six forward speeds and one reverse. Real automatic transmissions have a hydraulic or electrical system that engages different clutches and brakes to shift gears depending on the driving situation. With this model you control those simplified brakes and clutches yourself. The clutch is actuated by sliding the drive shaft through to different positions (which each have two gear markings), while three separate brakes each also have two gear markings. You select a gear by engaging the brake and clutch position associated with your desired gear. See demonstration video: I tried to design the gear ratios to be fairly close to what some real cars use, and this is the r…

Frequently asked questions

Is this 3D model free to download?: Yes. Automatic Transmission Model 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 emmett.
Who made this model?: Designed by emmett, 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.