> My wife died recently, half way through our moving house.
I am sorry for your loss.
>
> We were planning to take and re-use many of our curtains, all of which
> were sewn by my wife. But many of them need re-sizing, especially
> width-wise, being far too wide for the windows here, even allowing for
> gather.
Are the curtains lined?
>
> Any suggestions on what to use and the best way of going about it
> gratefully received. IIRC she used to use Copydex for some things, but
> whether fabrics, I've no idea. Would that be suitable?
>
I don't think that you would get a very good finish using glue. You
would need a lots tubs or tubes. If the curtains are not lined then you
may get away with using Velcro tabs:-
https://www.johnlewis.com/velcro-brand-stick-on-ovals-for-fabrics-24mm-pack-of-8-white/p3360282
You may find them cheaper elsewhere.
--
I'm a sew and sow!