Hephaestus is the dude of dudes to all the guys that spend most of their time learning how to fix cars and build stuff while they're at school. Like the rest of his mechanically-gifted buddies, Hephaestus loves to get his hands dirty. He's never happier than when he's putting something together or pulling something apart to find out how it works. FYI: Hephaestus has just started a petition to get blacksmithing back in schools. He's sure that the youth of today are totally missing out on this lost art form. What do you say? Want to sign?
Kothar is a Semitic god, who, like Hephaestus, is supposed to be a top-notch smith and craftsman of all kinds. A few of his more famous feats were crafting a bow for the mortal Aquat, building a fabulous palace for the warrior god Baal, and making two magical clubs for Baal, with which the warrior god defeated his enemy Yamm. Read more about the master craftsman here.
The Egyptian god Ptah is associated with craftsmanship, just like Hephaestus. Ptah, however, was more closely tied with stonemasons than blacksmiths. Since a ton of the stone chiseling that went on in ancient Egypt was done to decorate tombs, Ptah was also associated with death and the afterlife. Get more details on Ptah here.
This legendary blacksmith pops up in Norse, Germanic, and Anglo-Saxon legends. Like Hephaestus, he was said to walk with a limp. Wayland was hamstrung by a King Niðhad, who kidnapped him and forced him to forge things for him. The blacksmith got some serious revenge on the king, however, when he killed Niðhad's sons, made goblets out of their skulls, and tricked the king into drinking from the cups. (Yikes.) You can read more about Wayland here.