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In a message dated 11/22/2002 11:47:57 AM Central Standard Time, garyhall@ix.netcom.com writes:
My question is how did you measure this "shrinkage"? Just how
much did it shrink? Lastly, are you sure (for my edification)
you used epoxy and not some polyester?
Gary,
As I built my 320, some parts were primed with WLS 2-part epoxy primer when the fuselage was upside down for the last time - 4 years before it flew. Once completed, the rest was primed a year before , it flew. Each time a major priming sequence was done, fresh primer was used and then the airplane was flown in primer for a year and a half. I know I spent at least 1/3 of my build time sanding, the primer was applied 3 times and wet-sanded (by-hand and long boards) after each application. The airplane was painted and clear-coated by an experienced automotive/show-car painter and is beautiful in the sun. In the hangar's cruel florescent light, the fabric weave can be seen clearly anywhere not filled by micro or not gel-coated. Perhaps another coat of primer just before painting would have hidden the weave, perhaps.
A friend, who plans-built a Cozy, prepared his airplane by using a micro-slurry (very wet) squeegeed on before priming. Later sanded, primed and painted (by the same painter I used), there is no evidence of fabric weave and he has been flying it for years.
I am using this procedure (slurry) now.
We report, you decide.
Scott Krueger
N92EX
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