Blacksmithing is best combined with the gathering skill of Mining. Through mining a blacksmith can acquire the majority of the materials he needs Maple Story Mesos to level WoW Blacksmithing.
Blacksmiths are able to make Mail and Plate armor, as well as weapons of every type. At max skill level a Blacksmith learns recipes that allow him to craft Epic quality items that are incredible for both PvE and PvP.
Specialization, Weapon-smith and Armor-smith
At skill level 200, a Blacksmith can choose a specialty: Weapon-smith, or Armor-smith.
For a WotLK 1-450 Blacksmithing guide, take a look at this updated WoW blacksmithing guide.
Weapon-smiths are able to learn recipes that allow them to craft high level Swords, Maces, and Axes.
Armor-smiths are able to learn recipes that allow them to craft high level Mail and Plate armor.
Specialization, Hammersmith, Axe-smith, and Sword-smith
At skill level 300, a Weapon-smith can further specialize in his trade. He can choose to become a Master Hammersmith, a Master Axe-smith, or a Master Sword-smith. All items crafted from these specialized recipes are bind on Pickup and can not be traded or sold.
Master Hammer-smiths are able to learn very special recipes for crafting Epic quality maces. They can craft both 1H and 2H maces which are upgradeable.