Is this 3D model free to download?

Yes, Single Cylinder Air Engine, Experimental 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.

Single Cylinder Air Engine, Experimental 3D printable model by gzumwalt

Single Cylinder Air Engine, Experimental photo 1

Single Cylinder Air Engine, Experimental photo 2

Single Cylinder Air Engine, Experimental photo 3

Single Cylinder Air Engine, Experimental photo 4

Single Cylinder Air Engine, Experimental photo 5

Single Cylinder Air Engine, Experimental

Source: MyMiniFactory by gzumwalt

The Single Cylinder Air Engine, Experimental is a free printable 3D model from MyMiniFactory by gzumwalt. A few months ago (June, 2017) I posted a video on my YouTube channel ( of Single Cylinder Air Engine, Experimental. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from MyMiniFactory

231 saves Source: MyMiniFactory Updated 2026-10-16 License: DOWNLOAD-SHARE-MAINTAIN-LICENSE-CREDIT-REMIX-NONCOMMERCIAL · non-commercial

Tags: AirEngine, singlecylinder

About this model

A few months ago (June, 2017) I posted a video on my YouTube channel ( of Single Cylinder Air Engine, Experimental. After experiencing more than a few propeller strikes on my fingers, I put in on the shelf and decided not to publish it. Since then, I've had a few requests for the STL files, so here they are. Remember, this engine is experimental and when spinning the 10" propeller is potentially hazardous, so be prepared for precision filing, assembly, and fine adjustments if you decide to print it, and wear full protective gear (gloves, face shield, etc.) if you decide to run it. This design utilizes a cam, pushrod, ball bearing and spring to pressurize the cylinder at the correct time. The design depends on cylinder blow by for exhaust, and as such it is not as efficient, but again it do…

Frequently asked questions

Is this 3D model free to download?: Yes. Single Cylinder Air Engine, Experimental 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.