Whats the best way to remove a broken bolt inside of another metal object, mine is a brass valve. There are 3 valves in this box separated by a couple inches each and I would prefer to not have to cut it out. I bought a extractor set from Lowes and my foreman used the drill bit to drill out a small hole in the bolt but it didn't do anything. I've seen online to use some db blaster and let it sit and then try the extractor set. I've also seen to use a torch on it and once it cools it should come out. Thanks & Gig'em!