When I use Wesystem in colder weather like yours I stand the whole pack of resin in a pot of warm water for quite a while occaisionally adding more hot water to warm it up before mixing. If I don't do that it takes a lot longer to go off especially if it's going on thin. Like GS01 I prefer Vinyl Ester it's more reliable for going off in an expected time frame.
Last edited by JeffS; 02/27/10 05:17 PM.