On Sun, 20 Feb 2005 06:54:08 +0800, OldNick
wrote:
So, probably tape chines, inside and out, cover entire boat again
with like a 4 ounce glass and then throw a second layer of 6oz, or a
synthetic, on the bottom, and maybe wrap it a couple of inches up the
sides.

The second layer at 6 0z may be only 4? Watch the weight. You have to
carry this thing. Looking at the canoe as a 2' 6" half tube 5 yards
long, 10 oz of glass + resin = 28 lbs!

Does the strength come from layers or weight? i.e.: would one layer
of 12 oz be as good, better, or worse than two layers at 6 oz? or
three layers of 4 oz, 6 layers of 2oz 24 layers of 1/2 oz....etc....
I know in plywood, the more layers withina givin thickness, the
stronger the plywood. is it the same in fiber/epoxy?



A lot depends on your usage. If you are goping to simply work open
water with the occasional beach landing, then leave it at 1 layer. If
you are going to be really bashing it about, go for 2 layers.

To be honest, I am building this more because I saw the idea in a
magazine and it peaked my intrest. I rarely canoe, and it will
probably only see water a few times a year. In the off time it will
be stored in a shed, out of direct sunlight.

The one that interested me was Syntex, where they showed 2.8 oz cloth
holding up better than 6oz of glass. But I bet it's $$$$. And they
said it was a bitch to cut.

I've heard that about kevlar as well...

I don't have a building jig on this design. It is a simple canoe with
only two "corners"--One chine in the middle of the side, and then a
chine where it hits the bottom. Not sure if that would be considered
one chine or two, but either way it is a simple design.

Ok. Make sure the boat is very straight and true before you tape the
outside seams particularly. That is probably my point.

So noted. Thanks.

dave


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