Thin spruce is NOT the way to go. Plywood is stronger. 2-3 mm spruce would
be too easy to compress and only slightly better than paper or cardboard
and as equally moisture.absorbent.
Subject: Re: KR> Fw: waf
, or add some thin spruce instead of ply.
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I don't know that we really need to shim anything, although shimming out
the center WAFs would be one way to do it. The spars built per plans leave
a .21875" gap, and you still need to accommodate a pair of 1/8" wing attach
fittings, for a total of .25", so we are short .031". So either the C
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