This is a small, effective furnace (All credit goes to Night_Triumph).Steps:Step one: Gathering materialsAs this is a small project, it doesn't require a couple thousand rupees to build, in fact I suggest mining for iron to get enough iron for more than on furnace. The raw materials included-12 wood logs-8 cobblestone-15 IronThat's it! Processed building blocks:-3 chests-3 hoppers-1 furnaceStep 2: SetupThe first step is placing a furnace, like this: Step two: Chest placementPlace the chest one block above the furnace, to the bottom right, and the top right, like so: Step three: Hoppers, again like so NOTE: make the hoppers connect to the target, by Shift+RMOUSE on the target. the targets:Top chest: furnaceTop right chest: furnaceFurnace: bottom left chest. I hope this helped! Again, all credit to Night_Triumph, ask any questions!Put the fuel in top right chest, raw item in top, and it comes out the bottom!Pros: much larger fuel and materials inputCons: No XP from smelting.