Fiber board & high heat

roma · Post by **roma** » Wed Apr 09, 2003 12:26 pm

Hi Folks,

If I soak fiber board in hardner-dry-sand-burn out binder and
then k-wash can it then take temps up to 1700 ?

Soaking-it-in-girl

Jerry Barnett · Post by **Jerry Barnett** » Wed Apr 09, 2003 12:47 pm

Thermal Ceramics' "Kaowool" boards have continuous use ratings of:

M board: 1800
S board: 1900
HS board: 2000

All three have a maximum temperature rating of 2300.

Do not know whose board you have, but it is likely to be able to be used at 1700.

Do not know what kiln wash will do at that temperature.

Jerry

Amy Schleif-Mohr · Post by **Amy Schleif-Mohr** » Wed Apr 09, 2003 2:56 pm

I do it all the time.

I have been told that ceramic fiber devitrifys at 1800. It's a different kind of devit. It doesn't seem to bother the glass that I can tell.

If you do it a lot your board will deteriorate faster than normal.

Amy

roma · Post by **roma** » Wed Apr 09, 2003 4:05 pm

What I'm wanting to do is make simple cut out type moulds of fiber bd thats been preped so I can melt together scraps in to shapes. Should I
drill little vent holes in the bottoms of my excavated fiber board shapes
or is that needless because these are small jewel size shapes.

Roma

Gail Jensen · Post by **Gail Jensen** » Wed Apr 09, 2003 4:24 pm

What type of hardeners are you using and where can I purchase it?? I bought something called "water glass". It was a very thick liquid that I used on fiber blanket. But because of it being such a thick consistency, it didn't soak through. Any suggestions???? Thanks Gail

roma · Post by **roma** » Wed Apr 09, 2003 4:48 pm

I don't have the name with me now I'm at work. I work at Swest we
are a supply for jewelrs but not glass stuff. I just paint the hardner on
two or three coats. I let them dry between coats. After a day er two they
are bone dry. then you can sand to smooth.

Roma

Amy Schleif-Mohr · Post by **Amy Schleif-Mohr** » Wed Apr 09, 2003 7:44 pm

I don't think you need vent holes. The reason is some people get huge bubbles from wet mulite shelves and when the shelves aren't perfectly flat. On my FB shelves I fire with wet kiln wash all the time and they are definately not flat. The FB allows air to flow even after being ridgidized.

Amy

roma · Post by **roma** » Thu Apr 10, 2003 11:30 am

thanks Amy
This week end I'm looking forward to doing some hi heat
experiments for the first time. Mostly I'm working in the 1400 range
so a trip up to 1700 will be a new thing.

Roma