2021-7-2 · The Rock Crusher'' is a 3x2x2 structure for processing various materials. The rock crusher, a 3x2x2 structure The Crusher is built out of 12 special blocks made from a Block of Steel, Pistons, and Diamonds. If broken down, it takes 3 Blocks of Steel, 12 Pistons, and 12 Diamonds to build one Rock Crusher.