is this polyester resin or epoxy resin
huge difference
The cure times vary depending on brand, some have fast set, medium and slow hardners
I would never wait more that 12 to 20 hours to recoat without sanding between coats.
temp. has a lot to do with this stuff
sounds like a finish resin is gelcoat
I guess you must mean polyester resin then. That is nasty stuff Mike, all kinds on dangerous solvents in it, takes your breathe away if you don't have a tight fitting mask with the correct filters.
Epoxy resin is more money but I think it makes a world of difference for the do it yourselfer.