About this 3D model

Experimental but functional demonstration ring for children (with an adult). Printed body, recovery stamp or tin can (diameter 85mm height 73mm). Hammer: sheet thickness 1mm cut out see plan. At the end screw and nut to make a weight. The hammer is attached to the PLA tongue by a 6mmx42mm sheet metal tongue folded and crimped to the pliers. The coil from a small power adapter transformer (220v / 12v) the carcass was opened to form an electromagnet. Only the secondary 12v is used (see photo). The operating voltage of the bell is 12v alt. about. The breaker screw is screwed into a clip used in cars.