I just finished a bottom lam with 1 layer of 6 oz S cloth and a large patch over my fin box. It was a 9-9 noserider, 23 3/4 wide. Tried to get by with 32 ounces total (24/8) using a 3:1 mix, with 10 cc. Additive F. For the first time I heated my resin in the microwave for about 40 seconds. Heating it really thinned it out and I wish I know about that tip earlier. Anyway, back to the lam quantity. This was on a green foam poly, US Blank (former clark people). Without hardly any dripping the floor, I soon realized I would come up short and had about 50 percent of my rails still dry. Had to mix up 4 more oz to wet the rails, which is always a pain in the ass to do after the fact.
So, In counlusion, I needed 36 ounces to do it right the first time. I’m doing 2-6oz S cloth on the deck and going to mix up 44 oz total. Just so much easier to have a little extra and waste it rather than to have to play catch up in the middle to the job.
I applaud those of you who get by with so much less, but it just ain’t happening here. An extra $20-$30 bucks spent on resin to prevent dry lams on a board is just a price I have pay in order to do it right.
Hope this help those of you who are just getting into epoxy.