I put a washer over the head of small screws and MIG-weld it to the thing carefully.., the heat gets it out and the washer provides something to BEND up on 2 ends and turn so you can get the rotted beast OUT..

If its a big bolt-head I get a BIGGER nut to weld to the thing from the inside..

It has yet to FAIL ME!

1931 Chevy Sedan 360+ pages

Regards
Rob