Re: How much GelCoat??
I shot/sprayed some gelcoat with duratec a couple months ago. IMHO, this is what I would suggest.
Get the biggest tip lphv gun you can find, I used a 2.3. DONT use the duratec except for the last coat. If you have to thin the gelcoat to get it to flow out of the gun, maybe 10% or so on the duratec. Obviously, you don't use waxed gelcoat. It really takes 2 to spray, one to keep mixing, and one spray. I could get 1/2 the side of a 23' seacraft done with one quart mixed. You could shoot 2 cups before it "kicked" in the gun, if you worked fast. Then you had to "clean" the gun. Have lots of acetone on hand, get a paint suit and a VERY good mask. As for the result, this was the first time I used this product. I think I was a little thin in places. Plan on 3-4 med coats, especially if you have bare glass to go over, than one coat of 50-50 duratec. I would look at putting 3-4 coats on, than spending a day or so to wet sand back any peel/problems, then come back and hit it with the 50-50 duratec/gelcoat.
If you have any questions, let me know, or give me a shout.
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