Repair items placed inside for a base material cost (fuel, mineral, etc) something like 50 durability or 10% for every industry roll as a way to repair high durability things such as pickaxes without using 8 ancient ingots on it
Repair full durability of items placed inside (uses ancient ingots as input) with slots for tools/armor scaling with blacksmithing level
What if it took an input of Iron or Diamonds and made random pieces of armor or tools. (For a Lower cost in materials than crafting it manually.) Items would also receive the "forged in <town name>" tag.