#1  
Old 01-11-2013, 05:04 PM
Peasant
 
Join Date: Aug 2012
Location: swarthmore pa
Posts: 43
Default Oven door questions

We finished the perlcrete layer thanks to all your help- I'm using a space heater for the next month at night just in case.

I'm experimenting with the materials I have left over to make a door, and wanted your input, if possible.

I have a piece of 2 1/2 inch thick foamglass covered with hardware cloth, with reinforcing sheet metal on both aides, and wooden handles held together with carriage bolts- please don't laugh at my amateur attempt at door design.

I made a wooden form and am planning on casting the door using a mixture of perlite and refractory cement (4 to 1) to surround the foamglass/hardware cloth, then sealing the casting with a thin layer of the refractory.

Does this seem like a crazy idea? At least I will get experience with casting which interests me.

Thanks in advance.

Sarah
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  #2  
Old 01-11-2013, 09:43 PM
david s's Avatar
Il Pizzaiolo
 
Join Date: Mar 2007
Location: Townsville, Nth Queensland,Australia
Posts: 4,881
Default Re: Oven door questions

i've been down this road too, I think you will find 4:1 too weak. If it were mine I'd use 3:1 or 2:1 What you gain in insulation value you lose in strength. Perlite can be fired up to 1100 C by the way. You can increase the strength by firing the panel, but you probably need to go to 1000 C. Ask your local potter.
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Old 01-11-2013, 11:44 PM
Laurentius's Avatar
Master Builder
 
Join Date: Nov 2010
Location: Japan
Posts: 880
Default Re: Oven door questions

Chickade,

That will double as a great fish grill.
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Old 01-13-2013, 01:09 PM
deejayoh's Avatar
Il Pizzaiolo
 
Join Date: Jul 2010
Location: Seattle
Posts: 1,413
Default Re: Oven door questions

Have you thought about using metal plate over the mesh? Masonry materials don't seem like a great coating for something you need to slide in and out of an oven. Too brittle.
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