About this 3D model

A design for adding a picavet (suspension system/gimble) to the pop bottle camera mounts at http://www.publiclaboratory.org/wiki/pet-bottle-rubber-band-rig The design uses bicycle chain links as low-friction pulleys. You can use a M3 or 4/40 eye bolt instead Weight with zip ties & 4 pulleys is 34grams (mark 5 design)