Air Forge

You heat a patch of air to the great temperatures of a forge. You can hold up metal to that area and soften it as a real forge wood and then work the metal appropriately. Only items placed in the heated area by the caster or affected; the heat doesn’t affect anything else, and it can’t be felt by living creatures at all. This spell, along with a portable anvil, greatly lessens the difficulty for crafting repairing equipment in the field.

At Higher Levels. If air forges cast using spell higher than second level i heats a number of cubic feet of air equal to the spell slot used.