vermiculite board in kilns
Moderators: Brad Walker, Tony Smith
-
- Posts: 2339
- Joined: Tue Mar 11, 2003 12:06 am
- Location: Chatham NH
- Contact:
vermiculite board in kilns
Has anybody used vermiculite boards to line kilns or kiln floors? If so what brand and what density?
Bert
Bert Weiss Art Glass*
http://www.customartglass.com
Furniture Lighting Sculpture Tableware
Architectural Commissions
Bert Weiss Art Glass*
http://www.customartglass.com
Furniture Lighting Sculpture Tableware
Architectural Commissions
-
- Posts: 302
- Joined: Sun Jul 06, 2003 4:36 pm
- Location: Glasgow, Scotland
- Contact:
Re: vermiculite board in kilns
I've done it for sides, but no idea of density or trademark. 25mm thickness.
Steve Richard
You can view my Blog at: http://verrier-glass.blogspot.com/
You can view my Blog at: http://verrier-glass.blogspot.com/
-
- Posts: 2339
- Joined: Tue Mar 11, 2003 12:06 am
- Location: Chatham NH
- Contact:
Re: vermiculite board in kilns
I am evaluating based on weight, strength, insulating value, and cost. The denser V-board backed up with calcium silicate board will yield a 183º cold face with a 1500º hotface, on side walls. That is pretty good. A less dense V-board will be about 30º cooler. The floor is the radical place. I am thinking that if I cut the board up in to large bricks, it will not warp.
My 20 year old kiln lined with Unifrax HD board is in remarkably good shape considering it has been dropped a couple of times and overheated once. It will be a tough choice.
My 20 year old kiln lined with Unifrax HD board is in remarkably good shape considering it has been dropped a couple of times and overheated once. It will be a tough choice.
Bert
Bert Weiss Art Glass*
http://www.customartglass.com
Furniture Lighting Sculpture Tableware
Architectural Commissions
Bert Weiss Art Glass*
http://www.customartglass.com
Furniture Lighting Sculpture Tableware
Architectural Commissions
-
- Site Admin
- Posts: 1524
- Joined: Fri Mar 07, 2003 9:33 pm
- Location: North Carolina, USA
- Contact:
Re: vermiculite board in kilns
Skamol makes vermiculite bricks.Bert Weiss wrote: I am thinking that if I cut the board up in to large bricks, it will not warp.
-
- Posts: 2339
- Joined: Tue Mar 11, 2003 12:06 am
- Location: Chatham NH
- Contact:
Re: vermiculite board in kilns
Jim Wiles, who used to work for Skamol, now represents both Skamol and a German company. He prefers the German board for it's strength. I am thinking about cutting my own bricks something like 21" x 12" and shiplapped instead of square cut. I will immediately cover the floor with 1/4" fiber blanket, which can be either covered with more fiber blanket or replaced.Brad Walker wrote:Skamol makes vermiculite bricks.Bert Weiss wrote: I am thinking that if I cut the board up in to large bricks, it will not warp.
The big decision is really the walls and roof. Do I go for surface strength or light weight? I still lean towards light weight.
Bert
Bert Weiss Art Glass*
http://www.customartglass.com
Furniture Lighting Sculpture Tableware
Architectural Commissions
Bert Weiss Art Glass*
http://www.customartglass.com
Furniture Lighting Sculpture Tableware
Architectural Commissions
-
- Site Admin
- Posts: 1524
- Joined: Fri Mar 07, 2003 9:33 pm
- Location: North Carolina, USA
- Contact:
Re: vermiculite board in kilns
I've bought both types from Jim and he's right -- the German board is stronger, even at the same rated density. It's also a bit larger, being one meter long, rather than 36".Bert Weiss wrote:He prefers the German board for it's strength.
Last time I spoke to him Jim said he was going to stop carrying Skamol and only carry the German stuff (which comes from somewhere in Eastern Europe -- Romania maybe -- not Germany).