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Old 11-19-2009 | 09:10 AM
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dreadnaut
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From: Oceanside, CA
Default RE: Build Thread-Scratch built for 8s

Thanks.

There are some flaws if you look close, but that was a first try using that method. If you look close, there are pin holes and bubbles. The way I did it was to cut a strip of 2mil painters drop cloth 5" wide x 2" longer than the layup. I taped that to my building board then laid a strip of the carbon fabric. Mixed 15g of West System and squeegeed it on then laid 4 strips of tow, then 1 strip of 2 oz fg. The 2oz fg was used to prevent ripping the cf tow while squeegeing in the next 15 g of epoxy. One more layer of tow, one more of 2oz fg, 15g more epoxy squeegeed in.

Then I did another lay up just like it then mated them face to face, put them in the form, bagged it up then vacuumed it.

I am pretty sure that the pinholes came from putting breather on only one side. On my next pull, I plan to use breather on both sides, but that will sacrifice the high gloss finish.

I use paper towels as breather, but it leaves a texture on the part like they put into the towels; flowers and such. I am going to try to score a roll of "institutional" paper towels, like those used in public restroom dispensers. They are untextured.

Tonight the wife has a "girls night out" so I plan to get the wing, stab, and rudder jigs built, and work on the cowl plug.