Thread: 4" Carton refractor build
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Old 21-07-2011, 07:43 AM
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PhilW
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Join Date: Mar 2007
Location: Melbourne
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It is a very high-grade birch ply that I found in a hobby shop. It is three-ply, but only 1mm thick. So it was fairly easy to roll & form into a tube. This is also why it needs the extra rigidity provided by the baffles.
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