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Old 12-17-2011, 03:28 AM   #25 (permalink)
pete c
Master EcoModder
Join Date: Oct 2011
Location: ellington, ct
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roll the cinder block 90 degrees so the openings are at the top/bottom. it is much stronger that way. the way you have it, it is likely to crumble.

nice job, so far.
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