To give credit where due, I attempted (and succeeded) with this due to watching this Welding Tips and Tricks Video:
http://www.weldingtipsandtricks.com/...oken-bolt.html
I've got a 67 Cutlass Supreme Convertible and am spiffing up the engine compartment. I decided to take off the steering box. It's bolted to the frame with 3 bolts. 2 bolts came out whole and 1 didn't.
Starting Point:
After removal.
There's the 3 bolts - 1 good, 1 partially rusted and one in pieces.
What's left in the steering box.
Putting on a nut with a washer to weld to the bolt.
Putting a nut on the other side in hopes that I could put a wrench on both sides.
After nuts are welded on both sides.
One snapped off.
Weld another nut on.
Yay, the nut on the left is turning!