To craft something, You must move items from inventory into the 3×3 crafting grid, then arrange the items into the pattern representing the items You wish to create. Furnaces are crafted and used for the purpose of cooking food and smelting various items, then meet hostile mobs that appear only in dark places. They only spawn underground, never above ground even at night, but they will retreat if punched a few times with any tool or your weapon.
Crafting Games Build a village Source licensed LGPL v3 : drive{dot}google{dot}com/open?id=0BzbzEojsXJotaVk5MnZvc0lHNWM