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Old 08-21-2012, 11:07 PM   #6 (permalink)
Master EcoModder
Join Date: Dec 2011
Location: Boise Idaho
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if you have squared sides, and things are not perfect, you will induce vortices which will "fix" the imperfections.

build the thing.

keep side and top tapers to 20 degrees or less, and bottom taper to 10 degrees or less.

i would not worry about the corners.
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