F formulated the question :
Very much hope Colin is still with us...

..but I'm a little concerned that an angle grinder for pain relief hasn't
been suggested, yet.

I would have suggested it, but for the H&S problem of him only having
one arm with which to operate the grinder.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk