When a manufacturer states on the can 20 minute working time to gel and 30 minute to full set. Take it with a pinch of salt when working in hot climates!
250gms of grp resin later and it had gelled in 4 minutes! As the outside air temp is currently 36c and not much cooler in my toolroom, I've shoved the tin of resin in the freezer to chill down - I should have known when I picked it up and the can was warm that the cure time would be reduced, but eagerness to get on clouded my mind
At least I didn't mix up a full kilo! This is going to be one long laminating job if I have to mix it up 250gms at a time!
p.s NOBODY tell swimbo I put it in the freezer! Just hope there is no residual smell, but it is inside a couple of plastic carrier bags so hopefully should be ok.