sheared bolt

Be very wary of using screw extractors and breaking them. That really compounds the problem.

Assuming your drill is well centralised I would drill with a bigger bit so it nearly breaks through, and then try and remove the broken piece using a punch or similar to work the broken stud around.

It may also be possible to use a tap to remove the remnants.

Some would also advocate a left handed drill but they are very expensive.

Another alternative is to completely drill the part out and use a heli-coil repair kit.

Just a thought. If it is snapped off deep in the socket, is there enough thread for a shorter bolt?

Cheers

Dave R

No such luck :-(

Because the break was in the socket. and it was very ragged, I was unable to guarantee centralising the drill bit

I have managed to drill all the way through the broken piece and had ben hoping at that stage I would be able to knock out the remains, but that panned out.

I'll keep trying

thanks for you help

A picture of this would help visualise the situation (from online source, or uploaded, e.g. to imgbb).

On 18/10/2021 16:39, Chris Bacon wrote: > On 18/10/2021 13:16, fred wrote: >> Handle on Altendorf saw side fence sheared off >

A suitable sleeve might serve to centralise a larger drill bit for a further attempt. My experience of tapping a fresh thread is that the original invariably loosens and rotates with the tap!

One fix that I have sometimes done which may not be appropriate in your case, if attempts to remove and/or re-tap leave you with a "ragged" hole, perhaps with some partial threads, is to glue a length of studding permanently into the bolt hole using epoxy (either with or without steel loading) and then retain the moving part with a wing nut or other suitable female-threaded object.