1. where u use furnaces and when its done spits them out on to ground but doesnt dissapear after a certain amount of time.
     
  2. You can technically do this buy placing stones in the un-occupied slots of the furnace so the output has nowhere to go. It'll put them in the only place it can, which is the ground.
     
  3. Yeah, as I dont ever use charcoal in my survivals I just fill it up with 1 wood slot, 1 slot for the item(sulfur, metal, high qual), then fill the rest for the ore of that type. SO the charcoal spits out on the ground but the rest go into the furnace.