Q:

Removing badly rusted and broken bolt from suspension

I'm stuck trying to replace the rear lower control arms on my 92 Civic. One of the bolts was broken, and while I've now gotten the old arm off by taking a Dremel to the bushing and bolt, part of the bolt is still stuck in the nut that's welded onto the piece it goes through. That piece is actually part of the shock/strut, so in theory I could take it off and replace it, but I'd rather not do that. I've tried penetrating oil, heat, hammering, vise grips, and most recently, cutting the end of the bolt partly-flat (using the Dremel) so I could put an adjustable wrench around it to turn it, and nothing moves it. What options do I have left? I would try welding a nut onto the end to turn it, but I don't have any equipment or experience welding.
By the way, I also tried drilling through the middle of the bolt, but the only drill I have is the Dremel and its bit wasn't doing anything to the bolt...

A:

I ended up just taking off the shock so I could work with it better, then using the Dremel to cut off the welded-on nut that the broken bolt was stuck in. Then it was just a matter of putting it back together with a new nut and bolt.

