03-12-11, 11:32 PM
Try this...cut a slot with a hacksaw in the remaining portion wrap a rag or cotton wool around and soak it in penetrating oil ...leave overnight..remove the material and heat the stud to red hot with a blowtorch...as it cools insert an impact driver with a plain bit in the slot and twat it one...if the stud moves resist temptation and give it a further spray of penetrating oil then unscrew with a plain screwdriver ...If it tightens up and 'binds' screw in slightly...lubricate then try again
The Frying Scotsman