Allyson May on thu 16 feb 06
Do any you wonderful fountains of endless knowledge of glaze materials =
know which of the following frits have the lowest COE? Frit 3124; frit =
3134; or Frit 3195. I am mixing a transparent glaze for ^6 porcelain =
and am looking for a low expansion frit so the glaze won't craze. I =
know there are others than the ones I listed but these are the ones I =
have to work with at the moment. I have looked in all of my books and =
called Laguna (they were very nice and prompt with a call back) but have =
not been able to find the COE of these frits.
Peace,
Allyson May
Stoney Creek Pottery
Bloomington, IN
Daniel Semler on thu 16 feb 06
Hi Alison,
Check out ceramicmaterials.info (Run by digitalfire.com) for info
like this. I
couldn't remember which but checking this site 3124 appears the lowest
expansion. That said its not all there is to a frit. I don't know what your
recipe calls for or if you building one from scratch. If from scratch then go
for it, but if your subbing you might want to consider the composition too,
3124 has alumina whereas 3134 does not.
Thanx
D
Gayle Bair on thu 16 feb 06
Allyson,
I did a search for 3124 and came up with Tony Hansens's Digalfire site
http://digitalfire.com The 3124 info -
http://www.ceramicmaterials.com/cermat/material/350.html
I'm sure you can get the COE for the other frits too.
Gayle Bair
Bainbridge Island, WA
Tucson, AZ
www.claybair.com
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Allyson May
Sent: Thursday, February 16, 2006 6:17 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: question to glaze gurus about frit
Do any you wonderful fountains of endless knowledge of glaze materials know
which of the following frits have the lowest COE? Frit 3124; frit 3134; or
Frit 3195. I am mixing a transparent glaze for ^6 porcelain and am looking
for a low expansion frit so the glaze won't craze. I know there are others
than the ones I listed but these are the ones I have to work with at the
moment. I have looked in all of my books and called Laguna (they were very
nice and prompt with a call back) but have not been able to find the COE of
these frits.
Peace,
Allyson May
Stoney Creek Pottery
Bloomington, IN
Ron Roy on thu 16 feb 06
Hi Allyson,
Dave is right about the respective expansions of the three frits - however
- you will get quite a different glaze using each of them.
For instance - the reason 3195 has the lowest expansion is because it has
quite a bit of alumina and some MgO.
You may not get a transparent glaze using that frit unless you make
adjustments to the basic recipe.
Changing frits does change expansion but it also can change a glaze
dramatically.
RR
>Do any you wonderful fountains of endless knowledge of glaze materials
>know which of the following frits have the lowest COE? Frit 3124; frit
>3134; or Frit 3195. I am mixing a transparent glaze for ^6 porcelain and
>am looking for a low expansion frit so the glaze won't craze. I know
>there are others than the ones I listed but these are the ones I have to
>work with at the moment. I have looked in all of my books and called
>Laguna (they were very nice and prompt with a call back) but have not been
>able to find the COE of these frits.
>Peace,
>Allyson May
>Stoney Creek Pottery
>Bloomington, IN
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
Daniel Semler on thu 16 feb 06
Hi All,
Thx Ron, Dave. Allyson, I double checked with Insight and 3195 is the lower
expansion. It appears that ceramicmaterials.info has an error on this frit's
expansion.
> Dave is right about the respective expansions of the three frits - however
> - you will get quite a different glaze using each of them.
Apologies should have cross-checked.
Thanx
D
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