Slabs are crafted by placing a full block in the crafting table under a Handsaw. Varying strengths of Handsaw are required depending on the block in the crafting grid. One block yields two slabs. Placing both slabs in one crafting grid creates the original block. Gold, Diamond, Iron, Bronze, Steel, Lapis Lazuli, Tin, Emerald, Copper, Ruby and Sapphire slabs give six of the material when placed in a crafting grid.