ARMS
BUBBLE
BRAIN
CHEST
COLLAR
DONUT
KNEES
KNOB
LEGS
MICROPHONE
NEON
POWER PACK
PROG. BAY
RADAR
SPINNERS
TORSO
TORSO HOOK
TREAD
VENT
         

KNEES

The knee bellows are made from wood like many others have done. After routing the shape I hand sanded it to give it an uneven texture like slightly collapsed rubber. Once painted it even surprised me as to how much it looks like rubber.
The knee hinges of course do nothing, and each side was made with two pieces of masonite.