: Another two questions about Fiberglass.

: I'll most likely use 6 oz E-Weave as my main layer. There are some areas
: where I want to do some extra reinforcing, as seems normal. So, in
: figuring out my combinations, is there a difference between, say, 2 layers
: of 6 oz, versus 1 layer of 12 oz? I'm thinking that the resulting strength
: is equal, but folks use two layers mainly because they know they'll have
: scraps available after cutting the material for the hull and deck. So,
: other than minimizing waste, there's no structural difference between two
: layers of 6oz versus one layer of 12 oz.

: Is that true or false, or does layering in and of itself add strength that a
: single layer doesn't?

: Also, regarding the tape used for the seams... some folks use tape, others
: cut their own. Is the advantage of buying the tape simply that you don't
: have the fraying edges to deal with, or is there some other difference or
: advantage to buying tape? The best I can tell, 6 oz tape is the same as 6
: oz cloth, it's just that the tape is easier to handle, particulary on the
: interior when feathering your edges.

: Thanks again!

: Rick

Doubling up is the way to go. 12 oz may be ok on a flat surface, but is too stiff to curve arround a hull.
I tried using that to strengthen the stem. 12 oz was hard to wet out, the fiber would not lay down and stick above the epoxy. I tried pushing it into the fillet, as soon as I turned my back, the cloth would lift off the fillet. It was a mess.

12 oz also has a much more bumpy surface ( thicker threads) which telegraph through the epoxy, requiring a lot more sanding to smooth it out.

You can cut you bias tape from glass cloth. Instead of scissors, try using a fibric cutting roller (fibric stores or art supply stores sell those rollers) with cardboard backing the cloth. Store bought tape is ok, but you spend more time to sand off the edges.