Hello!Im a huge fan!Ive got a problem.Well I was on survival and I made a furnace and I dug down,collected some iron and then I found some diamonds.So I put my iron in to the furnace and into the first box so that I could make an iron pickaxe and break the diamonds without them breaking to pieces and it wouldnt let me put something into the second space.Then the only way to get my first iron out was to break the furnace.Plz help!Thanks.