Randy McCall on sat 23 jun 07
Try this speatmint colored glaze. Never have any problems even if you
underfire or overfire a cone or two. Great faultless green almost
opalescent
glaze. I usually brush or pour three medium thick coats. Breaks brown
where thin on edges. Great green glaze.
Recipe Name: CHAPPELLS IRRIDESENT GREEN
Cone: 6 Color: GREEN
Firing: Oxidation Surface: Glossy
Amount Ingredient
47.3 Nepheline Syenite
27 Gerstley Borate--1999
20.3 Silica
5.4 Ball Clay Number 1 or kaolin or another ball clay
100 Total
Additives
4 Copper Carbonate
6 Rutile
5 Tin Oxide
Unity Oxide
.418 Na2O
.112 K2O
.007 MgO
.463 CaO
1.000 Total
.687 Al2O3
.476 B2O3
.003 Fe2O3
4.627 SiO2
.004 TiO2
6.7 Ratio
73.4 Exp
Comments: OXIDES TAKE FROM MC6 GLAZE SPEARMINT GREEN.
ADDED TIN
Wonderful Key Lime Irridesent green glaze
-----------------------------------
Calculations by GlazeMasterT
www.masteringglazes.com
Randy
South Carolina
Pottery Web site
http://members.tripod.com/~McCallJ/index.html
joyce on sun 24 jun 07
ok
At 01:04 PM 6/24/2007, you wrote:
>Chuck this is Chappells Floating Blue base glaze with I have used for 30
>years. Have had pieces in dishwasher hundreds of times with no problem
>fading or washing out. It is the best brushable glaze I have ever used and
>never hardpans.
>
>
>Randy
>South Carolina
>Pottery Web site
>
>http://members.tripod.com/~McCallJ/index.html
>
>______________________________________________________________________________
>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.
Chuck Wagoner on sun 24 jun 07
That is a lot of Gerstley Borate, unfired that would have to be pretty =
soft
along with 4 percent copper make sure and have it tested. (As with any =
glaze
used for food) You might have John and or Ron reformulate it with less
boron.=20
It must "hard pan" if you don't mix and use it often? Do you add any
bentonite to get it to stay suspended?
Chuck
Rockville, IN
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
Try this speatmint colored glaze. Never have any problems even if you
underfire or overfire a cone or two. Great faultless green almost
47.3 Nepheline Syenite
27 Gerstley Borate--1999
20.3 Silica
5.4 Ball Clay Number 1 or kaolin or another ball clay
100 Total
Additives
4 Copper Carbonate
6 Rutile
5 Tin Oxide
Randy McCall on sun 24 jun 07
Chuck this is Chappells Floating Blue base glaze with I have used for 30
years. Have had pieces in dishwasher hundreds of times with no problem
fading or washing out. It is the best brushable glaze I have ever used and
never hardpans.
Randy
South Carolina
Pottery Web site
http://members.tripod.com/~McCallJ/index.html
John and Judy Hesselberth on sun 24 jun 07
On Jun 24, 2007, at 4:04 PM, Randy McCall wrote:
> Chuck this is Chappells Floating Blue base glaze with I have used
> for 30
> years. Have had pieces in dishwasher hundreds of times with no
> problem
> fading or washing out. It is the best brushable glaze I have ever
> used and
> never hardpans.
Hi Randy,
A base glaze that is durable with cobalt may or may not be durable
with copper. Copper is MUCH more difficult to keep in a glaze. It may
well be durable but I would sure test it first. The caution Chuck
gave on durability was an appropriate one.
Regards,
John
Ron Roy on sun 24 jun 07
Hi Randy,
Have you had this tested for copper release?
Just curious - it has a lot of alumina and silica and if it's well melted
it could be a stable glaze?
Do you want to see if it can be made with a frit?
RR
>Try this speatmint colored glaze. Never have any problems even if you
>underfire or overfire a cone or two. Great faultless green almost
>opalescent
>glaze. I usually brush or pour three medium thick coats. Breaks brown
>where thin on edges. Great green glaze.
>
>Recipe Name: CHAPPELLS IRRIDESENT GREEN
>
>Cone: 6 Color: GREEN
>Firing: Oxidation Surface: Glossy
>
>Amount Ingredient
>47.3 Nepheline Syenite
>27 Gerstley Borate--1999
>20.3 Silica
>5.4 Ball Clay Number 1 or kaolin or another ball clay
>
>100 Total
>
> Additives
>4 Copper Carbonate
>6 Rutile
>5 Tin Oxide
>
>Unity Oxide
> .418 Na2O
> .112 K2O
> .007 MgO
> .463 CaO
> 1.000 Total
>
> .687 Al2O3
> .476 B2O3
> .003 Fe2O3
>
> 4.627 SiO2
> .004 TiO2
>
> 6.7 Ratio
> 73.4 Exp
>
>Comments: OXIDES TAKE FROM MC6 GLAZE SPEARMINT GREEN.
>ADDED TIN
>Wonderful Key Lime Irridesent green glaze
>-----------------------------------
>Calculations by GlazeMasterT
>www.masteringglazes.com
>
>Randy
>South Carolina
>Pottery Web site
>
>http://members.tripod.com/~McCallJ/index.html
>
>______________________________________________________________________________
>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.
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Chuck Wagoner on sun 24 jun 07
I'm going to mix some up right now, sounds great. You can understand why I
would think it might hard pan with so NY SY in it. I'll give it a shot!
>>Chuck this is Chappells Floating Blue base glaze with I have used for 30
>>years. Have had pieces in dishwasher hundreds of times with no problem
>>fading or washing out. It is the best brushable glaze I have ever used
>>and never hardpans.
Randy McCall on mon 25 jun 07
Ron
It would be good to have it with a frit, but I really like the brushability
I get with the GB. Will use the GB as long I as can get it and it still
works.
Randy
South Carolina
Pottery Web site
http://members.tripod.com/~McCallJ/index.html
Randy McCall on mon 25 jun 07
Chuck this base does not require slow firing, but it will work in a slow
fire down just fine.
Just make sure you put on at least three good coats, I have not tried the
glaze thin.
Randy
South Carolina
Pottery Web site
http://members.tripod.com/~McCallJ/index.html
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