The unique niche of Colossal Paper Machines is the intersection of (fostering group work and spatial awareness) and predictable mechanical action (through folded cardstock beams and pinned joints). The book provides pre-printed templates; users trace, cut, fold, and assemble.
Since paper pulleys don't grip well, most colossal machines use an elastic band (or a rubber band chain) that is stretched tightly around paper wheels. The tension creates enough friction to transfer torque from the handle to the farthest part of the machine. Colossal Paper Machines- Make 10 Giant Models That Move-