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ceramic fiber board for raku kiln lid?

updated thu 6 mar 03

 

Anne K. Wellings on mon 3 mar 03


My friend has a round homemade expanded-metal kaowool-lined raku kiln and
has been using for a lid 2 rectangles of expanded-metal and kaowool which
she can easily remove herself while hot. But, needless to say, the
kaowool is getting floppy and beaten up and is a health issue. She's
wondering if she can use some sort of ceramic fiber board to make a lid.
I was thinking soft brick would be preferable, but it's thickness and
weight might make it too cumbersome for one person to lift off while hot.
I have found limited references in the archives to M-board, kaowool
board, and ceramic fiber board, but am unfamiliar with these materials
and how they can be used. Are they all the same thing? How thick is it,
and would one or two layers provide enough insulation? Any other ideas
for an easy-to-handle lid for such a kiln? I guess it is about 2 feet
inside diameter.

Anne

Phil Smith on tue 4 mar 03


On Mon, 3 Mar 2003 21:50:15 -0800, Anne K. Wellings
wrote:

>My friend has a round homemade expanded-metal kaowool-lined raku kiln and
>has been using for a lid 2 rectangles of expanded-metal and kaowool which
>she can easily remove herself while hot. But, needless to say, the
>kaowool is getting floppy and beaten up and is a health issue. She's
>wondering if she can use some sort of ceramic fiber board to make a lid.
>I was thinking soft brick would be preferable, but it's thickness and
>weight might make it too cumbersome for one person to lift off while hot.
>I have found limited references in the archives to M-board, kaowool
>board, and ceramic fiber board, but am unfamiliar with these materials
>and how they can be used. Are they all the same thing? How thick is it,
>and would one or two layers provide enough insulation? Any other ideas
>for an easy-to-handle lid for such a kiln? I guess it is about 2 feet
>inside diameter.
>
>Anne
>
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Anne,
Your friend could possibly spray some "Rigidizer" on the lid
to strengthen and keep the fibers down.

Phil...

Anne Wellings on wed 5 mar 03


Thanks, Phil, but what is "Rigidizer"? Is it a ceramic supply product or a
hardware store item? Is it a brand name? Sounds good, though, and I'll pass
it on to my friend.
Anne

On Tue, 4 Mar 2003 18:08:29 -0500, Phil Smith wrote:

>Anne,
> Your friend could possibly spray some "Rigidizer" on the lid
>to strengthen and keep the fibers down.
>
>Phil...
>

>On Mon, 3 Mar 2003 21:50:15 -0800, Anne K. Wellings
>wrote:
>
>>My friend has a round homemade expanded-metal kaowool-lined raku kiln and
>>has been using for a lid 2 rectangles of expanded-metal and kaowool which
>>she can easily remove herself while hot. But, needless to say, the
>>kaowool is getting floppy and beaten up and is a health issue. She's
>>wondering if she can use some sort of ceramic fiber board to make a lid.
>>I was thinking soft brick would be preferable, but it's thickness and
>>weight might make it too cumbersome for one person to lift off while hot.
>>I have found limited references in the archives to M-board, kaowool
>>board, and ceramic fiber board, but am unfamiliar with these materials
>>and how they can be used. Are they all the same thing? How thick is it,
>>and would one or two layers provide enough insulation? Any other ideas
>>for an easy-to-handle lid for such a kiln? I guess it is about 2 feet
>>inside diameter.
>>
>>Anne
>>
>