On Fri, 2 Apr 2021 17:10:53 +0100, pinnerite
wrote:

snip

So before another attempt, I thought I had better garner the benefit of experience.

I think it might have been suggested the first time that the chances
are, something like that would need something in the way or
reinforcing, given that it broke before being further weakened (by
breaking)?

So, is there any way you could brace the joint, even if only on one
side with something suitable (steel strip / sheet / rod etc)?

Cheers, T i m