How long should gelcoat take to cure?

[adrianreeve]

Hi there, I have a quick question about Gel coat. Been repairing a small knock in my rear wing this weekend. Fibreglass all good, then put the gel coat on top of the repair. I did this yesterday afternoon, and the gelcoat is hard, but the surface is still tacky, meaning that I can't sand and puta second coat over the first. how long should it take for the gel oat to go off? I'm reasonably sure I added the correct amount of activator.

Cheers

Adrian