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Fire-brick recipe

 
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We only have a dial-up internet connection at home so I went to the public library yestarday to use their fast connection.  I was watching you-tub clips and came across one making bricks using 500grams of sawdust,900grams of moist clay, and 1200grams of water.
Forming them into a wood mold and firing them at 1000 deg.

Does anyone have more info on this + building an oven or can an existing wood stove work with a rack or grate in it? And how long do you back the bricks etc.

I was digging out an old pond on the property a few yrs back and the clay around here is multi colored depending on how deep you go.
 
steward
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Here's more cool info on bricks in general in the cooking and food forum: https://permies.com/permaculture-forums/913_0/cooking-and-food-preservation/differences-in-bricks-for-oven.

Brian Kerkvliet at Inspiration Farm (very cool place!) is also a glass artist and build his own glass oven.
 
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Thanks ...... has anyone on here tried the methood of beating glass to powder using a cement mixer with rocks and broken glass in it?
 
                          
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hi Woodman

the fire bricks i made years ago useing the glass was to surround an old wood stove in a standard open fire place this made oven more efficient as heat loss through sides was stoped the chimney flue went through fibro cement sheet with roof insulation bats above to stop heat loss up chimney
I used a white clay, high caolin/kaolin? content, mixed with the powder and kiln dried for bricks, used white cement powder in the building stage as had heard white cement was more heat hardy

large steel ball bearings and chunks of heavy flat steel seemed to powder the glass easiest
the cement mixer had a few dings from the steel
 
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Never made brick.  I get my firebrick from work.  We have pallets of the stuff leftover from jobs out behind the shop.
 
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