Penny-Scaled Whistle Opener

Penny-Scaled Whistle Opener

thingiverse

After performing some measurements and calculations, I adapted Le_Garage's Whistle Opener (item 4232) to fit a standard US penny. For printing, I followed the TOM Mk7 default settings. To use, simply insert a penny and, optionally, break off the whistle ball using a small screwdriver before enjoying the whistling sound or opening it.

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