Upgrade Any Weapon to Max level.

To upgrade a weapon to the max you must have the necessary material before going to see Ulthane in Maker's Forge. All of the material listed below are able to be picked up or rewarded after defeating enemies. You can also buy them at serpent holes as you progress through the story (Sliver of Adamantine - 800 Souls, Fragment of Adamantine - 2,400 souls, Piece of Adamantine - 4,000 souls).

Level 1 - 2 Sliver of Adamantine
Level 2 - 4 Sliver of Adamantine
Level 3 - 6 Sliver of Adamantine
Level 4 - 2 Fragment of Adamantine
Level 5 - 4 Fragment of Adamantine
Level 6 - 6 Fragment of Adamantine
Level 7 - 2 Piece of Adamantine
Level 8 - 4 Piece of Adamantine
Level 9 - 6 Piece of Adamantine
Level 10 - 1 Chunk of Adamantine