I'm looking for a way to make something made of fabric become rigid. The obvious readily available stuff for doing this would be the resin used for fibreglass. I could use this but it's relatively expensive, a bit difficult and messy to use (two-part etc.) and much stronger than I need.
So, can anyone recommend an alternative? A 'one part' liquid that just needs to dry would be ideal, brush or spray application. It needs to be stronger/stiffer than starch or the (probably latext based) blind stiffening sprays, but, as I said doesn't need to be like cured fibreglass resin. I guess some sort of varnish would probably do what I want but what would be best given that they're not usually
*designed* for such a use.