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Message: <blockquote data-quote="Buck" data-source="post: 8868262" data-attributes="member: 591582">Depends on how much power you're running and if we're talking a box with sides a foot long or 4 feet long.  Simply, birch is lighter than mdf.  The lightest wooden box will be one with the best internal bracing, as internal bracing tends to make a box much stronger per volume used vs the volume used by adding more wall thickness.  Very large bridge design and aircraft frame design is a good place to see how to brace for light weight and elimination of resonance-based structural weaknesses.</blockquote>

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