Want to take boss ores down easily? This tip works well on all of them with the exception of the Golem Stone:
As a Blacksmith, craft a Spirit Pickaxe with a Dark Stone and an orb. (Bravery Orb, Love Orb, Wisdom Orb. Doesn't matter which one.) The result will be Special Deposit damage ++ plus the original Special Deposit damage + that comes with the pickaxe.