Strong smelting urn (r)

This is the final product of the Strong smelting Urn. To obtain one of these, You must either mine two clay, turn them into soft clay, Make a strong smelting urn (unf), fire the (unf)'ed to make a Strong smelting urn (M), And then finally adding a fire rune to make a Strong smelting urn (r) or simply buy a strong smelting urn (m) and adding a fire rune.