15882Re: [bolger] Re: Kiln-Dried Fir for Surf Mast? Spruce?
- Dec 2, 2001I get it, that won't win you much in lamination terms,
but what it does is if there is a no-fatal degree of
grain run-out, etc... the inversion will more likely
line up the good with the bad, and as a result give
you a reduced chance of having a really fatal flaw
somewhere, either as regards a tendancy to warp, or a
tendance to break. Doing this with a really nice
plank would be useless.
My preference is just to use my eyes. If I see a
fatal knot, I scarph around it, etc... A lot of these
boats use free-standing spars. These aren't going to
be loaded mostly in compresion, obviously they
deflect, so all the larger flaws should really be cut
arround, since they aren't going to like tension much
Someone mentioned elsewhere offsetting scarphs.
Nothing wrong with that, but if they are properly
done, they amount to lamination and may strengthen the
spar. That was the Piver strategy, enough overlaping
scarps that they stiffened things up.
Anyway, far be it for me to argue with what works.
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