Topic: Theoretical welding challenge

[Mr Rizla]

I read a while ago about a technique for removing damaged bolts on a car engine, dont know how realistic it is but feedback is most welcome.

Get a length of 1/2" hex steel bar, bout 8" long, weld the end of the bar onto the damaged head of the bolt, what type of welding i have no idea, Wildcat may make suggestions (printable ones). Idea is once shaft is welded to bolt head you can use a long shaft spanner on hex of rod, or maybe a socket on the end. Idea is once bolt has been unscrewed the rod is then unwelded from it and recycled on another damaged bolt. Is this practically doable or just another internet blog reduced to looroll status

ttfn

[trouty]

why would you want to put the damaged bolt back on?

throw damaged bolt away, replace it.

you could also weld the bar across the bolt, giving you the leverage to undo it.

[Mr Rizla]

Sorry, i ment to discard damaged bolt after its removal, if i not clear enough '>

[Wildcat]

I normally weld any old lump of solid bar sideways onto the head of the bolt then just swing on the new bar - no spanner needed. It sometimes works, the downside is that if it doesn't, you've probably mangled the bolt good and proper. The welding gets a bit of heat into the job, which is sometimes a help, but can be a mixed blessing as the bolt takes most of the heat and can expand, making matters worse, but the heating/cooling thing can crack the rust a bit.

[Dodge]

Snapped a small tap off flush and watched Mark Hill (MHP)tig weld a small rod to the end of same and screw the tap out...

very impressive  especially at 3am....