Eleanora Eden on tue 16 aug 05
Here is a glaze that I have been testing at cone 1 and it is a solid
good clear even when cone 1 over-fired substantially. I'd be very
surprised if it didn't work nicely at cone 2. Please let me know if
you try it.
Eleanora
Ron Meyer's cone 04
40.00 Frit 3124
5.00 EP Kaolin
5.00 Flint
0.70* CaO
0.00* MgO
0.02* K2O
0.27* Na2O
0.00 TiO2
0.39 Al2O3
0.54 B2O3
3.28 SiO2
0.00 Fe2O3
Cost:
Calculated LOI: 1.79
Imposed LOI:
Si:Al: 8.45
SiB:Al: 9.84
Thermal Expansion: 7.10
Formula Weight: 333.18
>HI Jonathan,
>
>The main problem at cone 2 is the alkaline earths (CaO, MgO, BaO and SrO)
>are not good fluxes at all so you need to rely mostly on frits.
>
>I have no experience at that temperature but - if you don't get any help I
>can try to help - let me know.
>
>RR
>
>
>>In my recent foray into earthenware, I discovered that the body I use
>>(Virginia Red) can be fired up to cone 2. Interesting - at that
>>temperature it still retains the soft red of earthenware, but is almost
>>vitrified and my guess would be more durable.
>>
>>The problem I'm having is finding a cone 2 clear. My first experiment
>>involved opening up James Chappell's Potter's Complete Book of Clay and
>>Glazes, and chose five clear cone 2 glazes (SSG 93, SSG 90, FG 40, FG
>>35, and FG 31). Not one of them turned out to be a stable clear. The
>>two that came out clear ran like crazy, pulling off the underglaze with
>>them. The other three ranged from a cloudy white to a hard blistered white.
>>
>>Since cone 2 is around 2088 F (with a heat rise of 108/hr), and since
>>that's about just 100 degrees below my cone 6 firings, I was thinking of
>>trying either Hansen's 20 X 5 clear or one of John and Ron's clears and
>>incrementally adding 5% more melter.
>>
>>I have test tiles all ready to test. I've searched archives and the
>>web, and haven't found anything. I would appreciate any suggestions
>>along creating a stable, cone 2 glaze.
>>
>>Thanks!
>>Jonathan in DC
>
>Ron Roy
>RR#4
>15084 Little Lake Road
>Brighton, Ontario
>Canada
>K0K 1H0
>Phone: 613-475-9544
>Fax: 613-475-3513
>
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David Woof on wed 17 aug 05
Here is a great one published as Autio Clear, cones 1 to 5. a very "wet"
clear. I use it at cone 5 but I've pushed it to cone 6, still stays where
you put it. I haven't fired at cones 1-2-3 but it comes recommended by
people who know what they are doing so I encourage you to test it. I use
it on both red or white body, over slips, stains, other glazes, ceramic
pencils and crayons and do fine line drawings with brush and stains. no
movement, smudge or distortion.
3124 85.5
OM4 Ball 12.8
Bentonite 1.7
David Woof
peering over the edge, reverently taking an irreverent look at everything.
Jonathan Kirkendall on sun 21 aug 05
Hi David,
Thanks for this! I'll give it a try and send you a photo of the results.
Jonathan in DC
David Woof wrote:
> Here is a great one published as Autio Clear, cones 1 to 5. a very
> "wet"
> clear. I use it at cone 5 but I've pushed it to cone 6, still stays
> where
> you put it. I haven't fired at cones 1-2-3 but it comes recommended by
> people who know what they are doing so I encourage you to test it. I
> use
> it on both red or white body, over slips, stains, other glazes, ceramic
> pencils and crayons and do fine line drawings with brush and stains. no
> movement, smudge or distortion.
>
>
> 3124 85.5
>
> OM4 Ball 12.8
>
> Bentonite 1.7
>
>
> David Woof
>
>
> peering over the edge, reverently taking an irreverent look at
> everything.
>
> ______________________________________________________________________________
>
> 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
> melpots@pclink.com.
>
>
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