thanks smoke. and sorry for the vague questions. guess i dont really know the right questions to ask, just trying to get an idea of what alls involved. and youre right, foam would be a lot more expensive, except for the +/- 30 gallons of resin and 100 gallons of isocyanate ive got sitting in my foam rig right now. its a little old but im sure i can kick it and its wall foam but there really is very little difference. and i think that even though i dont spray much anymore, just a side gig since the economy collapsed and i went into composites for a big company, i still have some contacts and might could get some "samples" from some of the manufacturers. they use to send me that crap all the time and it would just set in the shop and ruin.
theres always something new to learn about poly's and i dont consider myself a guru by any means. but i do know that the biggest difference between pour foams is the force they excerpt when expanding do to the different surfactants used. and trying something like i described could be a really good way to screw up a boat!. but overfilling and shaving, i dont think, wouldnt be as firm as cast in place under pressure
whats expensive right no, and has been for a long time, is resins!!! foam, fiberglass... it dont matter. if it says resin that ****s expensive! every time oil prices go up, resin goes up with it. but when oil prices fall do the resin prices fall with it? hell no!
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