The following is the introduction of manufacturing materials and tools, as well as the process graphic ~ Prepare miniature, miniature electric drill, scissors, silica gel ball (jumping ball) (2.5-3cm in diameter), swivel ring, bean stopper, small beads (I forgot to take pictures), nylon wire materials and tools, first pass through the jumping ball with an electric drill (without heating nails or iron wires with a miniature electric drill), put on the bean stopper at one end of nylon wire, and tie the swivel ring. After repeated processing, the weighing measurement was successful (the blue ball on the line is the jump ball).