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I worry a bit about an un-reinforced 3" concrete mix shell combined with high heat. It might crack.
An inner layer of tiles might help keep most of the heat inside.
Run it empty, or with something like flavored wood to seal the pores, about five times before first use.
That is a brilliant project.
Keep us posted.
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Meanwhile other things are still happening.
Last edited by john70t; 09-24-2015 at 07:23 PM..
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