Is this 3D model free to download?

Yes, PLA Spring Motor Demonstrator 2 is free to download from MyMiniFactory. Open it in the free Thinger app, or use the "Download from MyMiniFactory" link to open the original listing by the creator.

Where do I download the STL file?

The download is hosted by MyMiniFactory. Use the "Download from MyMiniFactory" 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 gzumwalt, published on MyMiniFactory. 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.

PLA Spring Motor Demonstrator 2 3D printable model by gzumwalt

PLA Spring Motor Demonstrator 2

Source: MyMiniFactory by gzumwalt

The PLA Spring Motor Demonstrator 2 is a free printable 3D model from MyMiniFactory by gzumwalt. PLA Spring Motor Demonstrator 2 is an updated Autodesk Fusion 360 design of my original PLA Spring Motor Demonstrator design of 5 years ago. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from MyMiniFactory

143 saves Source: MyMiniFactory Updated 2026-10-08 License: DOWNLOAD-SHARE-MAINTAIN-LICENSE-CREDIT-REMIX-NONCOMMERCIAL · non-commercial

Tags: ultimaker, pla, autodesk, Fusion360, SpringMotor

About this model

PLA Spring Motor Demonstrator 2 is an updated Autodesk Fusion 360 design of my original PLA Spring Motor Demonstrator design of 5 years ago. The original PLA Spring Motor Demonstrator was designed as a "proof of concept" tool to test whether a 3D printed PLA spring could power a gear train and move a vehicle. As a result of that successful test, I was able to design a number of 3D printed PLA spring powered vehicles. This updated version has a 1 (drive) to 125 (driven) gear ratio in three gear stages and, as shown in the side by side comparison photograph, is slightly smaller than the original. And while not a requirement, I used Ultimaker "Tough PLA" for the pawl, spring and frames for additional strength and longevity. PLA Spring Motor Demonstrator 2 is a fairly easy print and assembly, …

Frequently asked questions

Is this 3D model free to download?: Yes. PLA Spring Motor Demonstrator 2 is free to download from MyMiniFactory. Open it in the free Thinger app, or use the "Download from MyMiniFactory" link above to open the original listing.
Where is the STL hosted?: The download is hosted by MyMiniFactory, not by Thinger. We link you directly to the original listing by gzumwalt.
Who made this model?: Designed by gzumwalt, published on MyMiniFactory. 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.