1708 mat for stringers

[cterrebonne]

hate to bring up an old thread, but I have an epoxy question. From what I have read, if the epoxy does not blush then you can put another coat right over the first one with out sanding? Similar to polyester resin with out wax in it?

I know epoxy is stronger but I made the mistake by calling my local fiberglass repair shop and he said just to use poly. He said if I was worried about water seeping in to just paint it or gel it after? Poly is like half the price, Decisions decisions. I might just split the difference and go with vinylester

[RidgeRunner]

PE or VE will work but you do have to grind before and in between layers if you let it kick. Wet on wet allows proper bonding and cuts down on grinding. Not as good of a bond as epoxy so the 40 grit scuff marks during prep give the VE/PE something to bind to. PE/VE stinks to high heaven too unlike the epoxy. Neighbors might not like it.. Get a nice industrial fan, and stay upwind.. When it gets hot out, mixing the correct ratio of MEKP to resin gets tricky, a couple extra drops in you mix bucket and you will be fighting to get it rolled out before it kick$$. Epoxy is expensive, but it has distinct advantages.
I think 2 layers of 1708 on the stringers is ample. I am itching to get some glass work started myself. Keep us posted, im excited for you.

[Kracker Jack]

I tabbed my stringers in with 1708 10 inches into the hull and wrapped it over the stringer and tabbed it 10 inches up the hull on the other side. For checking purposes I then put a second layer over the stringer clears and down the stringer 4 or 5 inches and my stringers do not move at all! Not even a snap or a crack when I purposely tried to move them before my sole was installed. It saved me on some cloth. I went with polyester because I'm new to this and I'm on a serious budget. If I were you I would go with a VE, it is perfectly exceptable for your application and you will save some change in the long run. Just my opinion.