Is this 3D model free to download?

Yes, PLA Spring Motor Demonstrator 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 3D printable model by gzumwalt

PLA Spring Motor Demonstrator

Source: MyMiniFactory by gzumwalt

The PLA Spring Motor Demonstrator is a free printable 3D model from MyMiniFactory by gzumwalt. A spring motor demonstrator printed entirely in PLA, spring and all, requiring no batteries, power supply, electric or drill motors to operate. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from MyMiniFactory

185 saves Source: MyMiniFactory Updated 2026-11-04 License: DOWNLOAD-SHARE-MAINTAIN-LICENSE-CREDIT-REMIX-NONCOMMERCIAL · non-commercial

Tags: motor, spring, spring_motor

About this model

A spring motor demonstrator printed entirely in PLA, spring and all, requiring no batteries, power supply, electric or drill motors to operate. And what is it good for? For starters, it can be an interesting study for burgeoning mechanical engineering students of torque versus velocity, as well as spring forces that can be obtained by printing a PLA spring using various infill settings, height and thicknesses. And next, well, read on... Video is here: A rolling chassis version is available. Use safety glasses when operating the PLA Spring Motor Demonstrator. While I've operated the mechanism well over a hundred times without a failure, I always recommend erring on the side of caution as the spring could snap and send pieces flying where they shouldn't be flying, and that's never a good thi…

Frequently asked questions

Is this 3D model free to download?: Yes. PLA Spring Motor Demonstrator 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.