Hand Siren

thingiverse

This is a 2 piece hand siren for the make it loud competition. It is within the correct size to be printed for the competition and it is easily held in your hand. the pole and circle on the bottom piece is used to insert into the top piece and allow movement. When the handle is turned the top rotates and the rungs clack together and snap back into place to make noise as they go over each other.