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ordering lumber

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Jan 17, 2007
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I am getting ready to put an order in for some wood to build the ribs and ailerons and some small parts.

Couple questions. First what is the difference between 45 degree and 90 degree birch ply?? I mean i gues it is the way the plys are glued up. But as far as strength??? I see in 1/4 in all they sell is 90 degree so I will use that for nose ribs. QWhat about the 1/16 mahnogy for the gussets 90 or 45??

Next I assume the grain will run fore and aft on the nose ribs??

For the spars and leading edges (for ailerons) Do you guys buy a 1/2 inch piece and then just rip the angles into it?? Or do you buy it over size and plane it down to 1/2?

Thanks for the help



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