On Thu, 25 Apr 2019 16:55:35 +0100, Clive Arthur
wrote:

snip

I wonder if large heat shrink tubing might do the job?

I actually thought of that one but it would have to be pretty 'large',
well, compared to what h/s I've had / used in the past. ;-)

Tougher than
tape I would think.

Yes, I agree.

Or some wraps of fibreglass.

Ah, a couple of turns of some woven roving 'bandage' and stippled with
resin. Not only could that be applied where I like (and would likely
stay there) and to whatever thickness was needed but could be 'worked'
slightly to trim / true with a file etc.

I think the radiuses on the corners would be gentle enough for it to
not 'lift' off them.

I think this, subject to getting the right thickness might be a good
solution.

Or use carbon fibre tape / resin?

Cheers, T i m