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Old 07-15-2019, 05:08 AM
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Knife Knife is offline
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Join Date: Jul 2007
Location: NW Florida
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I’ve been making “I” beams out of extra thick cardboard (from 24 pack soda can cases) to reinforce the wings of my airliners. It not only keeps them from sagging over time, but keeps the wings from being crushed and flattened in handling.
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