Basic kazoo

print both parts in your preferred material, after a plastic bag as thin as possible cut a circle of between 18 and 19 millimeters, place it in the resonator and screw the cap, now put it in the mouth and play.   imprime ambas partes en tu material preferido, luego de una bolsa de plastico lo mas fina posible corta un circulo de entre 18 y 19 milimetros, colocalo en el resonador y enrosca el tapon, ahora pontelo en la boca y toca.