Brett Hammond:
Recycled Merry-Go-Round
Brett Hammond:
Mouse Trap Stairs
Brett Hammond:
Mouse Trap Crane
Brett Hammond:
Mouse Trap Pulley
Brett Hammond:
Guitar Playin' Sculpture
Brett Hammond:
Ribcage Bicycle
Brett Hammond:
Looong Bike
Brett Hammond:
Catapult Series 3
Brett Hammond:
Catapult Series 2
Brett Hammond:
Catapult Series 1
Brett Hammond:
Robot Wars arena at Maker Faire