Originally Posted by
Semisane
I don't see how a cement block would tell us anything. Now if you make the first layer a piece of pleather or naugahyde (skin), followed by a 1/2" layer of dampened newspaper or cardboard (muscle), followed by a piece of 3/8" plywood (bone), then the jugs............
After googling comparable media to bone, wood is way to soft. Reinforced concrete was mentioned so I think the block is soft but hard enough and a lot easier to get and use