BRCS:Dwarven Artisan Feat

You have studied dwarven smithing techniques and can forge items of superior masterwork quality.

Dwarf

Craft 9 ranks

Each time you take this feat, choose a craft skill in which you have 9 or more ranks. You can craft superior masterwork items using the chosen skill. The masterwork component of such an item costs three times the regular masterwork component. A superior masterwork item has the regular benefits of a masterwork item, plus the following:
Armor or shield: Adds a +1 enhancement bonus to AC. This enhancement bonus doesn’t stack with any enhancement bonus provided by magical armor or shields .
Tool: You gain an additional +1 circumstance bonus when using the item to perform related tasks.
Weapon: Adds +1 enhancement bonus to damage. This enhancement bonus doesn’t stack with the enhancement bonus provided by a magical weapon.

You may gain this feat multiple times. Each time you take the feat, it applies to a new craft skill. Dwarves do not generally share knowledge of their smithing techniques with members of other races.