You can see the full crafting recipe for the furnace below: At a crafting table, place eight stone blocks (cobblestone is easiest) in every box but the middle one. This is all that's needed to ...

and you can upgrade your furnace to a Heavy Furnace once you unlock the recipe for it. How To Unlock The Heavy Furnace Recipe ...

Glass Furnace A glass furnace lets you make glass ... But, of course, you must follow a recipe. This item can be crafted using the following recipe(s): ...