"Jim K.." wrote in message
o.uk...
Nick Odell Wrote in message:
On 02/03/2019 21:32, Murmansk wrote:
I'm trying to dismantle one of those outdoor swings - like a wooden sofa
suspended on chains from a wooden framework with A shaped supports at
either end.

The bits of timber are attached with what I think are called coach
bolts - a domed head with a square bit underneath.

The problem is that the bolts are recessed down a hole. I can turn the
nut with a socket set but because it's a all a bit rusty and seized up
the head of the bolt turns as well and I can't get hold of it to stop it
because the head is domed and down a hole.

Any ideas how I can get hold of the head to stop it turning?

Altogether, one, two, three: ANGLEGRINDER!!!

Seriously - and maybe this is what Jim was thinking of - could you slice
through the timber with an anglegrinder in such a direction that
inserting a new splint of wood will give the structure its strength back
and also cut through the shaft of the bolt in such a place that you can
pop each severed half out of there? Beware of metal sparks setting dry
timber on fire!

Er no I was suggesting the op cuts the nut off at the other end
from the recessed coach bolt head. He has access as he is trying
to turn it?

But it might be in a hole in the wood and he is using a socket on it.