Wooden planks can be created by putting a block or more of wood in the crafting grid (either a crafting table or a player's inventory grid). When this is done, four wood planks are recovered per log. It appears as a series of interconnected planks. It is good for creating a support style for buildings and also making houses, huts or shacks.
Wood planks have a wide variety of uses. They are good for giving buildings and homes a cabin-like appearance. However, wood is sometimes discouraged for use as a building material (especially in multiplayer), as the house could be burned down. Wood planks are an essential crafting material for the most basic of tools, as well as a vital material for those beginning the game and attempting to survive their first couple of days. Wood planks can be used as fuel for furnaces (smelting 1 1/2 items per plank). If used for smelting, it is more efficient to use wooden planks rather than logs because they have the same smelting duration, and the log contains enough wood for 4 planks; however, it is even more efficient to use those planks to smelt logs, providing charcoal (which smelts 8 items). It is not advised to have a fireplace unless one can be assured that their wooden house will not burn down. Try putting non-flammable blocks around the fire area, such as cobblestone.