When should you forge weapons?

[Knai]

Originally Posted by Doo

Frost Brand and Fire Brand at Construction 4 are good as they effectively attack a whole "square" of units and not just one unit in the square. They clear mobs of weak units quickly.

These are incredible weapons, that remain useful until the endgame. That said, the Stone Sword and the Shadow Brand are both significantly better than them. You can sometimes get away with giving these to standard commanders, but usually you want to summon something (Unless you have something really impressive. Glamour goes a long way, as stated, and Niefel Jarls are borderline SCs). Often, this means Banes, and later Bane Lords.