Is this 3D model free to download?

Yes, 7 Cylinder Radial Engine 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 plusalphaDesigns, 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.

7 Cylinder Radial Engine Model 3D printable model by plusalphaDesigns

7 Cylinder Radial Engine Model

Source: Thingiverse by plusalphaDesigns

The 7 Cylinder Radial Engine Model is a free printable 3D model from Thingiverse by plusalphaDesigns. Note: This model is a correction to the original 8 cylinder radial engine model I built before. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from Thingiverse

2,239 saves Source: Thingiverse Updated 2026-10-07 License: CC-BY-NC-SA · non-commercial 31 makes Category: Toys & Games

Tags: aircraft, airplane, engine, engineering, hand crank, hand cranked, mechanical, mechanical toy, model, piston, Radial Fan, rotary, working

About this model

Note: This model is a correction to the original 8 cylinder radial engine model I built before. I realized after publishing the previous version that 4 stroke radial engines need to have odd number of cylinders. As a correction, I modified the the cylinder block to have 7 cylinders instead of 8. Most of the parts are identical to the previous one, so if you have already built the 8 cylinder version, you can re-make a few parts and make a more "realistic" radial engine model. To assemble, print the following parts, and follow the assembly procedure. - Cylinder Block - Handle * - Rotor * - Pin * - Hub Bottom (Requires support) - Hub Top - Piston (x 7ea) * - Rod (x 6ea) * (Parts with an asterisk are identical to the 8 cylinder version. Note that you need 1 less of piston and rod.) The "un-sec…

Frequently asked questions

Is this 3D model free to download?: Yes. 7 Cylinder Radial Engine 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 plusalphaDesigns.
Who made this model?: Designed by plusalphaDesigns, 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.