Fortify Bond (Su): At 4th level, a soul forger may spend 1 point from his arcane pool to increase the hardness and hit points of his bonded item by an amount equal to his magus level. These hit points last until expended or until the soul forger next prepares spells. Multiple uses of this ability overlap and do not stack. This ability replaces spell recall.
In Fortify Bond does the increase of his bonded weapons hardness stack with the hardness from a special material like adamintine that gives a weapon 20 hardness?
