* There are no known size limitations for items the smelter can smelt. The item only need be metal, not enchanted, and able to be heated to a glowing hot temperature state.
* The "'Smelt'" action is not available if the item is not glowing from heat.
**When an item is marked as "glowing hot", it still may need more time until the Smelt option is available.
* Smelting a rare or better metal item will produce a corresponding rare or better lump.
* A small amount of metal from the original item is typically lost to the smelting process.