Board is 2lb eps glassed with RR epoxy resin using recommended amounts of additive f…double 6 clolth on deck…6 on bottom.So i laminated the board about a week ago, then hot coated it about 4 days later… 3 days after that (tonight) put a super thin coat resin on to cover where I had a few spots that became over sanded (i realize that this is not the best time frame, but it is just the way things worked out…). The temp was on average 74 degrees when I glassed…(sometimes hotter 84- sometimes colder 65).
When is too soon and when is too late to post cure… i read the archives but my situation seemed a little different. Also, should i scour the surface with sand paper before i post cure? I am not sure if the skin of the hotcoat would interefere or make it more likely to delam.
I plan to bring a thermometer with me to work and monitor the heat by rolling down the windows. I also plan to wrap board in a blanket to keep the direct sunlight from being an issue. I will keep the temp below 100 degrees F. I guess my other option is to putinto black trash bags and leave in the sun for a while. The car method seems easier to control.
It might be too late. I can’t recall how soon it needs to be done to have any affect.
I bake in my laundry room with a small ceramic heater than holds the room at 100 degrees. I had to try 2 different heaters to find one that would hold at 100.
In your instance..not recommended. The temp need to stay between 120 and 130 degrees, no more, no less.
Usually these kind of things at best bring marginal results, and a worst, destroy your surfboard.
I've been riding your same glassing schedule with foam density and the boards are fine wothout any post cure mumbo Jumbo. Maybe it's better epoxy or just luck, but In my pea brain opinion the bebefits are not measurable.
Also where do you work that it gets so hot you need to, or can roll down the windows? What's up with that.....do you work in a bus or train?
Now maybe if you lived some place where it stayed cold for a long time, then the stories might be different?
ha! i live in coastal NC and it gets super hot here in the summer (whats the saying-? hotter than 2 rats screwing in a wool sock in the attic in the summer…thats how hot it gets!). It was 87 degrees yesterday. Maybe i will just let the board cure in my garage for a week where the temp gets to the mid 80s in the afternoon for a few hours each day.
I’ve got a post cure hot box thing that fits on top of my wood and metal rocker table…
I don’t advise post curing up to 130f. without some form of rockered support under the board especially with stringerless like I usually build…
I’m sure it can be done without some form of rocker bottom support but twisting of the board and/or a relaxed rocker curve is possible…
I don’t even bother much anymore… Sure the laminate is stronger but who tests such things really?? I sure don’t…
A few days inside a 90 to100+deg. car or van cure up the resin pretty good anyway, just don’t place anything heavy ontop of the board and possibly twist it…
Just set the board flat ontop of the deck of an older board with similar rocker… The hot car will do enough to cure it as well as needed…imho…