Tin Can Telephone
Tin Can Telephone *** 3d printable tin can telephone *** Manual : Tie each earphone with a string/sound medium to carry sound. This string will make it possible for one person to speak into the earphone and another individual to listen from a second piece. ************************************************ Material : a) Bronze with "good vibration" capability hence used in bells (Corrosion resistant undersea/salty water for marine applications , non-flammable, non-combustible and reusable with a melting point range of 854 - 1010 degree celsius ) : " Bronze is a copper-tin alloy with a deep red color (similar to rose gold) commonly used in jewelry, accessories, and home decor ". This material has an ultimate tensile strength between 55.2-1010 MPA and a hardness between 30.0 - 420 HB . *********************************************************** Applications : Residential, Commercial, Industrial, Lab, Marine, Travel, Natural Disasters a)...