super-compact, five-note collapsible flute/whistle that prints in just 30 minutes and uses less than 10g of filament.
The design is highly durable and includes a
...さらに表示 snap-on cap with a lanyard strap attachment hole, allowing it to be used as a keychain.
It is not tuned to any specific key or scale, but each note can be played clearly and with strong projection.
You can open the cap using your nail at the location marked by the arrow.
For the best tone and tuning, blow harder as you open more holes.
