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Old 05-20-2013, 05:35 AM
Serf
 
Join Date: Apr 2013
Location: Nova Scotia
Posts: 11
Question Holy Brick In Nova Scotia, Canada

I'm considering using this old chimney brick from a home demolition for the inner dome. As you can see from the picture, there are manufactured holes in this brick. Has anyone ever used this type of brick on an oven? I'm planning on using fire brick for the hearth and red clay brick on the outer dome layer.

Cheers,
C.
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  #2  
Old 05-21-2013, 12:38 AM
david s's Avatar
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Location: Townsville, Nth Queensland,Australia
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Default Re: Holy Brick In Nova Scotia, Canada

The unsuitability of wire cut bricks, or any bricks with holes in them relates more to the fact that cutting angles in them will often not result in a flat face and the holes drastically reduce the density of the brick which reduces thermal mass. Also in an oven we want to heat the whole brick and the holes reduce the conduction so the walls will take longer to heat. you can fill the holes with mortar or something, but the mixture you use could create more problems. Stick to solids if you can get them. If you have the bricks with the holes for free you may want to experiment.
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Old 05-21-2013, 06:12 AM
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Default Re: Holy Brick In Nova Scotia, Canada

Holed brick are extruded and wire cut and normally fired to a much higher temperature than solid commons. They will work, but will be prone to spalling and, as stated, are not dense enough and will you will have issues with cuts.
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