pee wee wrote: ↑Tue Feb 28, 2023 9:49 am
800 g/sm equals about 23.6 ounces per yard, according to a conversion site I used. If one of us in the U.S. wanted to apply this information to our build, are you saying that we'd want to apply two layers of 12 oz. biax to bottom and top to equal what Vundu is doing? The glass would need to be oriented so strands run 90 degrees to centerline, not at 45 degrees?
One of the suggestions to reduce weight on the FS19 was to use foam for the sole, I wonder how much of a saving this would actually accomplish.
I don't want to hijack this thread, but it sounds like Vundu has it figured out and I'd like for all to understand the plan.
Yes.
And your observation about weight loss is astute, Hank. The problem for foam or nida is hand lamination and stiffness both.
A single layer of say 400gsm is not going to make a honeycomb core very stiff. And nida core's or any pp core, for that matter, with a veil is resin thirsty in the veil layer. I've tested it and used about a quart of resin for 32 sqft, so about 1/2-1 ounce for wetout of the veil. If you don't work super fast or pour onto the honeycomb; it'll run into the combs. I think I did one panel with like 18 ounces. The actual fabric on nida is only 45 gsm or 1 ounce fabric, but if anyone can wetout a sheet of nida with 3 ounces of resin; they are a better laminator than me!
If we could add vacuum; then 1600gsm is reduces to about 800-1000, and even more for the thirsty veil.
I have done the numbers. The best benefit is a never rot layup.