About this 3D model

Φ8 Threaded Rod Shaft or linear shaft *1 M3 x 10mm bolts *12 Rubber band *2 參考 http://www.thingiverse.com/thing:252808 ===================================== φ8軸x1 M3螺絲10L長X9~12個 橡皮筋*2條 https://www.facebook.com/groups/562208953848064/