Multi-tone Whistle
thingiverse
A while back, a friend of mine asked if I could make her a version of a Fox 40 whistle. Originally, I tried to make one in Google Sketchup but the result was unprintable. Then I made a close replica in OpenSCAD, but that didn't print well and didn't make any sounds. So, I decided to go after a design that accomplished the same thing (2-tones & pealess) but had a more printable form. It took me 8 iterations, but I finally got it :) Instructions Print. Attach string or lanyard. Blow (outside).
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