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Balsa under Glass/Epoxy

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Old 11-17-2010, 10:46 PM
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joe_crash
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Default Balsa under Glass/Epoxy

Hello everyone,
I'm very new to this aspect of the hobby. Iwould like to glass either one of my foamies, or a all balsa bird, sand fill repeat, just to get that finish that looks so good in a composite frame.
Can anyone reccomend any online sources of glass/resin/hardner? And does Resin have a shelf life?I have a can of it in my garage, but think it is over 5 years old - I guess I'd be better off getting some new resin, huh?(seems a no brainer once Ityped that out).

I have heard and read an article about building a F5B power soarer (I think it is F5B) where in the article he stretched a kevlar or glass sock over the fuse, glassed it, (left the nose open), poured in acetone to disolve the foam and ended up with a completely composite frame. Would this work?
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Old 11-18-2010, 08:37 AM
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CloudyIFR
 
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Default RE: Balsa under Glass/Epoxy

I like JGreer epoxy:
http://www.jgreer.com/
300/21 works fine. I heat cure all my parts with an electric heat blanket. I wrap the part in the blanket about 3 hours after mixing up the epoxy and allow it to cure for about half a day. This gives much better results and JGreer recommends heating 30 degrees F. above the intended use.

West Systems is probably one of the more popular brands:
http://www.cstsales.com/west_system_epoxy.html

I can't attest to shelf life of epoxy.

The sock method works great:
See: http://tailwindgliders.com/Video2.html

Curtis
Montana
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