Janet H Walker on wed 3 dec 97
...where it is thick, the glaze shivers off.
Yep, that's it all right. I use this glaze on a ^6 porcelain where
it stays put, even thick. On a red stoneware, it (a) doesn't loook as
nice and (b) jumps off the pot. For me, it looks more like copper
than gold, but quite unusual in any case.
...I have misplaced the recipe for a fantastic red/brown/green glaze.
Maybe what you had was Randy Red. For me, it has all those colors
and then some. This is reliable for me ^6 electric on both
stoneware and porcelain. I like it better on red clays, where it
gets remarkably rusty looking. Got it from Mimi Obstler's book, Out
of the Earth Into the Fire (great book):
Randy Red ^6 electric
20 soda feldspar (Kona F-4)
32 Gerstley borate
5 EPK
14 talc
30 flint
15 red iron oxide
This glaze is remarkably sensitive to the exact ingredients you use as
well as to tiny variations in kiln placement and firing schedule.
I've tried reformulating it with different ingredients for the same
unity formula (e.g. replacing the G.B. with a frit) but I didn't
like any of those nearly as well. Have fun.
Jan Walker
Cambridge, MA USA
Barbara Lewis on fri 5 dec 97
I have used Randy's Red in the past, and one version floating around uses
half Crocus Martis and half Red Iron Oxide for the colorant. So, for
instance,in this recipe that would be 7.5 Crocus and 7.5 RIO. Much more
lively than simply using RIO. Gives a beautiful red, and even looks better
refired. Barbara
At 09:58 AM 12/3/97 EST, you wrote:
>----------------------------Original message----------------------------
> ...where it is thick, the glaze shivers off.
>
>Yep, that's it all right. I use this glaze on a ^6 porcelain where
>it stays put, even thick. On a red stoneware, it (a) doesn't loook as
>nice and (b) jumps off the pot. For me, it looks more like copper
>than gold, but quite unusual in any case.
>
> ...I have misplaced the recipe for a fantastic red/brown/green glaze.
>
>Maybe what you had was Randy Red. For me, it has all those colors
>and then some. This is reliable for me ^6 electric on both
>stoneware and porcelain. I like it better on red clays, where it
>gets remarkably rusty looking. Got it from Mimi Obstler's book, Out
>of the Earth Into the Fire (great book):
>
>Randy Red ^6 electric
>20 soda feldspar (Kona F-4)
>32 Gerstley borate
>5 EPK
>14 talc
>30 flint
>15 red iron oxide
>
>This glaze is remarkably sensitive to the exact ingredients you use as
>well as to tiny variations in kiln placement and firing schedule.
>I've tried reformulating it with different ingredients for the same
>unity formula (e.g. replacing the G.B. with a frit) but I didn't
>like any of those nearly as well. Have fun.
>
>Jan Walker
>Cambridge, MA USA
>
Barbara Lewis
5412 Well Spring Road
La Plata, MD 20646
blewis@crosslink.net
(301) 932-3915
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