Is this 3D model free to download?

Yes, Four Whistles Version 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.

Four Whistles Version 2 3D printable model by gzumwalt

Four Whistles Version 2

Source: MyMiniFactory by gzumwalt

The Four Whistles Version 2 is a free printable 3D model from MyMiniFactory by gzumwalt. Four Whistles Version 2 is my first attempt at a "calliope" (well, sort of calliope) design utilizing the primitive knowledge I gained from the original Four Whistles model ( Not. You can download the STL file from the original listing below and print it at home.

Open in Thinger (free) Download from MyMiniFactory

635 saves Source: MyMiniFactory Updated 2026-09-19 License: DOWNLOAD-SHARE-MAINTAIN-LICENSE-CREDIT-REMIX-NONCOMMERCIAL · non-commercial

Tags: balloon, musicbox, calliope, ToyMusicBox.

About this model

Four Whistles Version 2 is my first attempt at a "calliope" (well, sort of calliope) design utilizing the primitive knowledge I gained from the original Four Whistles model ( Not being a musician and being more than "slightly hard at hearing", while it may not sound like it this model is attempting to play "Mary Had A Little Lamb" using a balloon to power the whistles and a hand crank to power a cylindrical sequencer. In order to play "Mary Had A Little Lamb", I incorporated four whistles in the design of this model, each controlled by one of four air valves. Each of the air valves are controlled by a rotating cylinder containing small 2.5mm "bumps" that activate the valves in the correct order (the "cylinder sequencer"). In order to minimize air loss and maximize play time, I designed the…

Frequently asked questions

Is this 3D model free to download?: Yes. Four Whistles Version 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.