[@DJAtomika] Weapons are created by using "Clean" steel or other alloys. "Clean" meaning untouched by Darklings. They can be discarded pipes or hubcaps and the sort or be welded together and shaped into Anti-Darkling patterns. Then to give them some more power they are given a 13 letter name or 36 letter phrase for a name. 

Polymaths are the best at coming up with names. 13 letter words can practically be called forth at will by them and they almost never run out.