Frank Colson on tue 2 oct 07
Been there, done that! Just soak the ceramic fiber in collidial silica,
dry and use in any temp up to and above 2100F. O f course the tensil
strength ain't worth a dog's rear leg! You would have to use refractory
posts like crazy to support it. Otherwise, fire away!
Frank Colson
----- Original Message -----
From: "T. Toler"
To:
Sent: Tuesday, October 02, 2007 2:13 PM
Subject: ceramic fiber - refractory soaked odd shelves
> Has anyone ever experimented with ceramic fiber soaked in a thinned down
> refractory for an odd shaped kiln shelf?
>
> ______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
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T. Toler on tue 2 oct 07
Has anyone ever experimented with ceramic fiber soaked in a thinned down
refractory for an odd shaped kiln shelf?
Lynne and Bruce Girrell on wed 3 oct 07
> Has anyone ever experimented with ceramic fiber soaked in a thinned down>=
refractory for an odd shaped kiln shelf?
Taking the heat is no problem, but except for the most lightweight of objec=
ts, I doubt that RCF, even in board form, would have enough strength.
=20
A $30 diamond blade on an angle grinder will make quick work of cutting a s=
tandard shelf to whatever shape you want. Probably will cost you less than =
the sheet of RCF.
=20
=20
Bruce Girrell
_________________________________________________________________
Help yourself to FREE treats served up daily at the Messenger Caf=E9. Stop =
by today.
http://www.cafemessenger.com/info/info_sweetstuff2.html?ocid=3DTXT_TAGLM_Oc=
tWLtagline=
Ivor and Olive Lewis on wed 3 oct 07
Dear T Toller,
Sounds like a good idea, imitating reinforced concrete. All you can =
really do is have a go and test a sample. Remember that once the fibre =
is wet it will compress down so you may wish to cure the mixture under =
pressure.
DeBoos, Harrison and Smith, "Handbook for Australian Potter's" ISBN =
0-454-00448-6, have a chapter on making refractory furniture
Best regards,
Ivor Lewis.
Redhill,
South Australia.
Bill Merrill on wed 3 oct 07
It's amazing to me the trouble we go thru to try and cut cots of things =
that we as artists just can't manufacture, like kiln shelves. Ordinary =
clay kiln shelves can be cut easily with a carbide blade, but a diamond =
blade we can buy won't hardily cut a silicon carbide kiln shelf. I =
wonder if a water jet cutter is used to cut silicon carbide? I have =
some 2 1/2" x 2 1/2" x 36" hollow silicon carbide forms that I use to =
span large platters and put shelves on these beams. They were custom =
made and cut to length. They were expensive but worth the money. =20
I think we need to be creative and save money, but, sometimes trying to =
save money can actually cost us more in the long run. I'm not negative, =
just pragmatic when it comes to things like this.
Bill
billm@pcadmin.ctc.edu
=20
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Lynne and =
Bruce Girrell
Sent: Wednesday, October 03, 2007 5:22 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: ceramic fiber - refractory soaked odd shelves
> Has anyone ever experimented with ceramic fiber soaked in a thinned =
down> refractory for an odd shaped kiln shelf?
Taking the heat is no problem, but except for the most lightweight of =
objects, I doubt that RCF, even in board form, would have enough =
strength.
=20
A $30 diamond blade on an angle grinder will make quick work of cutting =
a standard shelf to whatever shape you want. Probably will cost you less =
than the sheet of RCF.
=20
=20
Bruce Girrell
_________________________________________________________________
Help yourself to FREE treats served up daily at the Messenger Caf=E9. =
Stop by today.
http://www.cafemessenger.com/info/info_sweetstuff2.html?ocid=3DTXT_TAGLM_=
OctWLtagline
_________________________________________________________________________=
_____
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your subscription
settings from http://www.ceramics.org/clayart/
Moderator of the list is Mel Jacobson who may be reached at =
melpots2@visi.com
om on wed 3 oct 07
On Oct 3, 2007, at 5:21 AM, Lynne and Bruce Girrell wrote:
>> Has anyone ever experimented with ceramic fiber soaked in a
>> thinned down> refractory for an odd shaped kiln shelf?
> Taking the heat is no problem, but except for the most lightweight
> of objects, I doubt that RCF, even in board form, would have enough
> strength.
>
> A $30 diamond blade on an angle grinder will make quick work of
> cutting a standard shelf to whatever shape you want. Probably will
> cost you less than the sheet of RCF.
I've used a $5 masonry blade on a skill saw to do the same. Takes
several passes and Dusty as all heck though -- wear a respirator --
but works (at least on mullite shelves).
Odin
T. Toler on wed 3 oct 07
Greetings All
I, as I assume many of you, have boxes full of little small cut offs of
ceramic fiber from building kilns. I use them to plug holes in kilns and
saggers and what ever is needed. I also have several bags of various
commercial dry mix refractories. I didn't know if anyone had already tried
to use these cut off pieces with thinned refractory or not, - and didn't
want to reinvent the wheel. It's not so much the expensive I am worried
about, I just like to tinker and learn. I think I will do some tests and
report back with what I find out.
Thank you for the replies.
T.Toler
Texas
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Ivor and Olive
Lewis
Sent: Wednesday, October 03, 2007 1:37 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: ceramic fiber - refractory soaked odd shelves
Dear T Toller,
Sounds like a good idea, imitating reinforced concrete. All you can really
do is have a go and test a sample. Remember that once the fibre is wet it
will compress down so you may wish to cure the mixture under pressure.
DeBoos, Harrison and Smith, "Handbook for Australian Potter's" ISBN
0-454-00448-6, have a chapter on making refractory furniture
Best regards,
Ivor Lewis.
Redhill,
South Australia.
____________________________________________________________________________
__
Send postings to clayart@lsv.ceramics.org
You may look at the archives for the list or change your subscription
settings from http://www.ceramics.org/clayart/
Moderator of the list is Mel Jacobson who may be reached at
melpots2@visi.com
Andy Misner on thu 4 oct 07
We use a diamond blade to cut silicon carbide but it just eats the blade
real bad. I know a number of places use a water jet to cut it. Silicon
Carbide prices will be going up again real soon. So if you are thinking
about getting anything made of SiC this is just a heads up.
P.S. We will give anyone from Clayart a 10% discount
Andy Misner
www.indfirebrick.com
Bill M wrote:
a diamond blade we can buy won't hardily cut a silicon carbide kiln shelf.
I wonder if a water jet cutter is used to cut silicon carbide? I have some
2 1/2" x 2 1/2" x 36" hollow silicon carbide forms that I use to span large
platters and put shelves on these beams. They were custom made and cut to
length. They were expensive but worth the money.
Eleanora Eden on wed 10 oct 07
My nifty plastic wet saw (Ebay about $30) cuts cordierite shelves like butter. Also tiles.
Haven't had need to try it on silicon carbide but don't know why not.
Eleanora
>It's amazing to me the trouble we go thru to try and cut cots of things that we as artists just can't manufacture, like kiln shelves. Ordinary clay kiln shelves can be cut easily with a carbide blade, but a diamond blade we can buy won't hardily cut a silicon carbide kiln shelf. I wonder if a water jet cutter is used to cut silicon carbide? I have some 2 1/2" x 2 1/2" x 36" hollow silicon carbide forms that I use to span large platters and put shelves on these beams. They were custom made and cut to length. They were expensive but worth the money.
>
>I think we need to be creative and save money, but, sometimes trying to save money can actually cost us more in the long run. I'm not negative, just pragmatic when it comes to things like this.
>
>Bill
>
>billm@pcadmin.ctc.edu
>
>
>
>-----Original Message-----
>From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Lynne and Bruce Girrell
>Sent: Wednesday, October 03, 2007 5:22 AM
>To: CLAYART@LSV.CERAMICS.ORG
>Subject: Re: ceramic fiber - refractory soaked odd shelves
>
>> Has anyone ever experimented with ceramic fiber soaked in a thinned down> refractory for an odd shaped kiln shelf?
>Taking the heat is no problem, but except for the most lightweight of objects, I doubt that RCF, even in board form, would have enough strength.
>
>A $30 diamond blade on an angle grinder will make quick work of cutting a standard shelf to whatever shape you want. Probably will cost you less than the sheet of RCF.
>
>
>Bruce Girrell
--
Bellows Falls Vermont
www.eleanoraeden.com
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