Originally Posted by
Hopping_Rocks
Update: I took the cranks to the LBS. They couldn't remove it using the special wrench and a vise either. The guy suggested that I try using a blowtorch. I thought there would be one at my parent's house, but they don't have one either. I'll have to take it back to the shop and let them use their torch. I'll have to leave the cranks there overnight. They also had replacement cranks that I could get for $25, but I'd like to keep the original cranks.
Heat might help, but before you go nuts, do you need the nut (cone) or do you have a spare on another crank.
If you don't need the cone (nut) and only want to salvage the crank or chainring, then you can crack it off by grinding into it fairly deep, and using a chisel to fracture it (unless it decides to spin off.)
Wear real eye protection (eyeglasses aren't enough) because small chips may fly back when it shatters.