Allyson May on sat 3 dec 05
Earl,
I use this base with its various colorants. It has become one of my =
favorites. I use Laguna ^6 porcelain and fire according to RR and Johns =
slow cool schedule in M^6G. The cones indicate a hard 6 to soft 7 at =
the end of firing (^6 at bottom of kiln, soft 7 on top). I have not =
experienced any runniness with this glaze. I often spray Val Cushing's =
blue wood ash over the top 1/3 of the soft green version. Wow, its =
beautiful and a big seller at last months show and sale!! The iron =
version performs the same way. I sometimes spray it with the Cushing =
blue ash or Isenberg's red art ash. Great surface, nice variation, and =
lovely crystals where it pools in textures. I tried it out on Laguna =
buff stoneware and YUCK! Pits, bubbles, snotty green and baby diaper =
mustardy brown for the green and iron versions respectively. I do apply =
this glaze on the medium to thin side. Maybe your application is a =
little too thick or maybe your clay is causing an additional flux. I am =
not a glaze guru so will leave that to those more knowledgeable than I!! =
Just wanted to let you know what my experience has been with this =
glaze.
Recipe: GA23 Satin Matt Base ^6-7
Nepheline Syenite 41.8
Gerstley Borate 10.4
EPK 12.5
Whiting 10.4
Lithium carbonate 6.2
Flint 12.5
Titanium dioxide 6.2
Add:
light green 1.0-2.0 Copper carbonate (I use 1.5)
light blue 1.0 Cobalt oxide
rusty bronze 3.0 RIO
*Glaze recipe taken from Glazes Cone 6; Michael Bailey
Peace,
Allyson May
Stoney Creek Pottery
Bloomington, IN
AMay4@msn.com
Earl Brunner on sat 3 dec 05
If it's ok, I'm going to send you a picture of my test tiles. It will be an attachment on a followup email. I dipped these one time most of the way down, a second dip about half way down and then the rim a third time, (just to see what happened at different thicknesses.
Allyson May wrote: Earl,
I use this base with its various colorants. It has become one of my favorites. I use Laguna ^6 porcelain and fire according to RR and Johns slow cool schedule in M^6G. The cones indicate a hard 6 to soft 7 at the end of firing (^6 at bottom of kiln, soft 7 on top). I have not experienced any runniness with this glaze. I often spray Val Cushing's blue wood ash over the top 1/3 of the soft green version. Wow, its beautiful and a big seller at last months show and sale!! The iron version performs the same way. I sometimes spray it with the Cushing blue ash or Isenberg's red art ash. Great surface, nice variation, and lovely crystals where it pools in textures. I tried it out on Laguna buff stoneware and YUCK! Pits, bubbles, snotty green and baby diaper mustardy brown for the green and iron versions respectively. I do apply this glaze on the medium to thin side. Maybe your application is a little too thick or maybe your clay is causing an additional flux. I am not a glaze guru so will
leave that to those more knowledgeable than I!! Just wanted to let you know what my experience has been with this glaze.
Recipe: GA23 Satin Matt Base ^6-7
Nepheline Syenite 41.8
Gerstley Borate 10.4
EPK 12.5
Whiting 10.4
Lithium carbonate 6.2
Flint 12.5
Titanium dioxide 6.2
Add:
light green 1.0-2.0 Copper carbonate (I use 1.5)
light blue 1.0 Cobalt oxide
rusty bronze 3.0 RIO
*Glaze recipe taken from Glazes Cone 6; Michael Bailey
Peace,
Allyson May
Stoney Creek Pottery
Bloomington, IN
AMay4@msn.com
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Earl Brunner
e-mail: brunv53@yahoo.com
Jason Hooper on tue 6 dec 05
Hi Earl,
I found this was a bit too runny in the original recipe, and I fire to a
low cone 6. I did a couple of tests and found I could reduce the lithium
and increase the silica and still get a great surface. Also no change in
surface after 2 days in vinegar.
This is what I'm using at the moment:
Nepheline Syenite 40
Gerstley Borate 10
EPK 12
Whiting 10
Lithium carbonate 5
Flint 15
Titanium dioxide 6
cheers,
Jason
> Recipe: GA23 Satin Matt Base ^6-7
> Nepheline Syenite 41.8
> Gerstley Borate 10.4
> EPK 12.5
> Whiting 10.4
> Lithium carbonate 6.2
> Flint 12.5
> Titanium dioxide 6.2
--
Jason Hooper
http://www.southpawceramics.com
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