May be purchased up to three (3) times, once every 10 levels. (10, 20 & 30) When purchased for the first time, the Weapon Knowledge may be assigned to any single, base Weapon Skill the Smith knows. (i.e. 1 Handed Blades, Bows, 2 Handed Crushing, etc. but no Weapon Masteries). Weapon Knowledge provides a damage bonus per level when using the chosen weapon. This is also considered to be part of a Smith’s specialization for their Weaponsmithing production skill. There are certain Grand Master recipes that require this knowledge or an affinity and only a Smith with the correct specialization can create them.