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<blockquote data-quote="shizzzon" data-source="post: 6418216" data-attributes="member: 590338">Well, since 2x4s are so thick....I&#039;ve got 2 ideas and want to see what you guys think about it-I got a small 2door car so space is a problem, therefore i must lean toward the strongest method with the least room taken up...So, here is 2 methods-method 1-Use 2 sheets of 1\2&quot; Baltic Birch.&nbsp; In between these 2 sheets, use 4 layers of Durock.&nbsp; durock is concrete and fiberglass mesh mixed together.&nbsp; I read back in 2001 that a competitor used resin to pour in between each Durock layer and all around it to seal the layers up.&nbsp; Then use all-thread cross bracing to finish the bracing off...OR...method 2-Use 1.5&quot; of Baltic birch for the box material.&nbsp; On the Outside, weld an entire framed enclosure out of 1&quot; steel square tubing.&nbsp; Wrap this tuning all around the box and use 1\2&quot; thick steel runs on the inside to bolt to the tuning on the outside.Method 1 - 2.25&quot; thickMethod 2 - 2.5&quot; thick.Which method sounds fullproof... if any?</blockquote>

[QUOTE="shizzzon, post: 6418216, member: 590338"] Well, since 2x4s are so thick.... I've got 2 ideas and want to see what you guys think about it- I got a small 2door car so space is a problem, therefore i must lean toward the strongest method with the least room taken up... So, here is 2 methods- method 1- Use 2 sheets of 1\2" Baltic Birch. In between these 2 sheets, use 4 layers of Durock. durock is concrete and fiberglass mesh mixed together. I read back in 2001 that a competitor used resin to pour in between each Durock layer and all around it to seal the layers up. Then use all-thread cross bracing to finish the bracing off... OR... method 2- Use 1.5" of Baltic birch for the box material. On the Outside, weld an entire framed enclosure out of 1" steel square tubing. Wrap this tuning all around the box and use 1\2" thick steel runs on the inside to bolt to the tuning on the outside. Method 1 - 2.25" thick Method 2 - 2.5" thick. Which method sounds fullproof... if any? [/QUOTE]

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