#21  
Old 04-30-2008, 10:15 AM
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Default Re: My first oven is a success

very neat webpage. thanks
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  #22  
Old 04-30-2008, 10:15 AM
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Default Re: My first oven is a success

Eh?
teach
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  #23  
Old 04-30-2008, 12:10 PM
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Default Re: My first oven is a success

OK I got something to eat. Much better.

If I buy firebricks and supplies for this project, could I use them in a permanant build? Would a burn or residue damage the brick?
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  #24  
Old 04-30-2008, 12:47 PM
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Default Re: My first oven is a success

Bricks: OK. Firebricks are only harmed by chemical/heavy metal contamination.
Insulation boards: OK to the extent they weren't cut.
Loose vermicu/perlite: OK
Anything made out of concrete: Landfill
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  #25  
Old 05-02-2008, 10:13 AM
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Default Re: My first oven is a success

Thanks, Dmun!
Why is the concrete landfill? Is that due to structural damage?
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  #26  
Old 05-02-2008, 10:46 AM
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Default Re: My first oven is a success

For a temporary oven build, anything cast from concrete in unlikely to be reusuable. Things stuck together with cement based mortars are going to be hard to take apart.

You could make your support slab from pre-cast concrete lintels, but they tend to be very expensive. I don't see any reason why you couldn't make your own in hand made forms. If your support slab was in four lintel-like pieces, two or three people could lift them into position on the block stand, and they could be re-used when you relocated the oven.

As a note, pre-cast lintels are made from special pre-stressed rebar, and are designed to be installed in one particlar postion. I think this application is much less fussy - your rebar would need only be near the center of the slab section.

James once built an oven in Europe using terra-cotta lintels, light, strong and cheap. Sadly, not available in the States.
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  #27  
Old 05-02-2008, 10:56 AM
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Default Re: My first oven is a success

Quote:
Originally Posted by dmun View Post
James once built an oven in Europe using terra-cotta lintels, light, strong and cheap. Sadly, not available in the States.
Everything in the Mediterranean, for southern France to Italy and Spain, is made our of terracotta beams and blocks. It's fun to watch construction projects for houses that are designed to last 500 years. They build a roof structure out of terracotta beams, and then pump tons on concrete on top. The weight must be incredible.

There was a small apartment building going up next to our tennis club, and it was a real kick watching it develop over the months. Beams, lintels, brick, block, and concrete. That's why Italy has muratore -- masons, where we have carpenters.

If I could figure out an inexpensive and safe way of getting them shipped from Italy to your house, it would be good. The beams are basically free. Still, using supports and Hardibacker isn't too bad. I think that beats plywood forms.

James
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  #28  
Old 05-06-2008, 09:11 AM
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Default Re: My first oven is a success

James,
You're a lovely but oblique spirit, and I bow to your Phorno Bravo site
Thanks eh,
jeff H.
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  #29  
Old 04-23-2009, 01:01 PM
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Default Re: My first oven is a success

Bringing this back from the dead.

I'm looking to build something like this however i still cant visualize how the roof is held up. Can anyone enlighten me? Anyone have any other ideas for a low budget mortar free build like this?
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  #30  
Old 04-23-2009, 04:36 PM
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Default Re: My first oven is a success

The referenced oven
used a castable refractory concrete ceiling over his baking chamber. Castable isn't for the faint of heart. If it were me, I'd buy a kiln shelf. Either castable or kiln shelf takes the project out of the low-budget ballpark.

Even if it were just for a few uses, i'd spring for some insulation, and even vermiculite concrete isn't cheap.
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