Rock Crusher - Feed The Beast Wiki- broken rock crusher ,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.broken rock crusher - Crusher Mining Equipment zenith. This is an industrial grade continuous duty jaw crusher great for crushing Hard rock ores. Broken concrete/asphalt/bricks.