Quote Originally Posted by Toph View Post
The way I do it is with a tig welder, it's much more accurate . carefully build up the end of the broken bolt with a peak of weld, keep building the peak until it's protruding out of the hole, then slip a 8mm nut over the peak, welding it on, then undo the bolt with a 13mm spanner... if the broken bolt is corroded, gentle heat with a oxy-acetylene torch, whilst twisting the bolt, will free it off.

Always works, I've been doing them for years...much easier when access is easy, as in your case.... the quote from your local garage is a fair price, you're not getting ripped off.. hope this helps.

Toph.
This is the way too go, prob worth £20 if you do not have acccess to tools.