Toys & mechanisms

Narwhistle — narwhal whistle, loud twin-chamber, one piece, no supports

A narwhal standing on its flukes on an ice floe that is also a loud pealess whistle: blow into the tusk, the sound leaves the blowhole. Two stopped-pipe chambers of unequal length pulse against each other — measured on the printed part at 2266 Hz with a ~66 Hz warble, the Fox-40 architecture. 102 x 40 x 31 mm, one piece, print-in-place, no supports, no hardware.