Update 2023-11-16:

I have now created a new version of this whistle set, which, due to its specific design, does not require long bridges and is therefore easier to print:

News:

For building block enthusiasts, I've created a Lego compatible variant of this whistle set:

Update 2023-03-07:

I also designed a nice low-poly display stand for this Set which you can download here.

Update 2023-03-04:

I added two higher and lower pitched variants so it's a complete set now.

Summary:

This steam train whistles have only 2 tubes. However, the choosen geometry generates suitable overtones that ensure the realistic sound. The whistle can be blown softly or loudly.

Print with 0.4 mm line width and 0.2 mm layer height. And don't print too fast, a whistle needs sharp edges.

If you want a nice dual color print, change filament at layer 6 and 36.

Please also check out …

… my new Safety Whistle: