THE NEW FIRING 10.11.12

I've emailed Alisa Clausen and solved the Riddle of the Raspberry Blue glaze -- now I have a couple of pieces glazed with it, as well as some pieces glazed with my Grape Monstrosity mix -- one with cobalt oxide that come out decidedly grape, and another with cobalt carbonate, that if it comes out much different, I shall name Purple Haze, in honor of Jimi Hendrix whose birthday I share.


Here are the two miscreant grape glazes I mixed. Alisa has cleared up her posting on Raspberry Blue -- it no longer has all of the variations that I wandered through trying to figure out the additives for Raspberry blue.


I combined the additives for the MC6 Raspberry glaze and the additives for Raspberry blue.  It makes a great purple when you accidentally put in cobalt oxide instead of cobalt carbonate.  I shall see what the other miscreant mixing does in this next firing


GRAPE GLOSS GLAZE WITH COBALT OXIDE

cone 6	X1	X2	X3	X5
Neph Sy	18	36	54	90
Frit 3134	14	28	42	70
Whiting	20	40	60	100
OM4	18	36	54	90
Silica	30	60	90	150
total	100	200	300	500
oxides
Chrome Ox	0.2	0.4	0.6	1
Tin Ox	7.5	15	22.5	37.5
Cobalt Oxide	1	2	3	5
RIO	0.5	1	1.5	2.5

GRAPE GLOSS GLAZE WITH COBALT CARBONATE

cone 6	X1	X2	X3	X5
Neph Sy	18	36	54	90
Frit 3134	14	28	42	70
Whiting	20	40	60	100
OM4	18	36	54	90
Silica	30	60	90	150
total	100	200	300	500
oxides
Chrome Ox	0.2	0.4	0.6	1
Tin Ox	7.5	15	22.5	37.5
Cobalt Carb	1	2	3	5
RIO	0.5	1	1.5	2.5

I mixed up the following glazes:
Raspberry Blue -- the REAL version

cone 6	X1	X2	X3	X5
Neph Sy	18	36	54	90
Frit 3134	14	28	42	70
Whiting	20	40	60	100
OM4	18	36	54	90
Silica	30	60	90	150
total	100	200	300	500
COLORANTS
Cobalt Carb	1	2	3	5
RIO	0.5	1	1.5	2.5

Gloss Praesydimonium Yellow

Cone 6	X1
Neph Sy	35
Silica	21
EPK	10
Whiting	8
Gerstley Borate	18
TOTAL	92
COLORANT	7 Praseodymium yellow #6433

I also glazed some pieces with the Strontium Opal blue I made for a firing done in September.



I mixed up some of John Post's tomato red glaze #13 as well as the Juicy Fruit glaze that he puts over the tomato red for some lovely effects posted on his blog.  I hope I get some lovely effects also, and I hope the glaze does not run all over the kiln shelf! Maybe I can find a cookie for it.  I will use the firing ramp that John Post emailed me for his slow cool tomato reds.
John Post Tomato Red #13

FRIT 3134	10.8
Neph Sy	23.1
Bone Ash	10
Magnesium Carb	6.2
Whiting	7.7
EPK	21
FLINT	21.2
TOTAL	100
BENTONITE	2
Red Iron Oxide	12
Lithium Carb	2

JEN'S JUICY FRUIT VARIATION FROM JOHN POST

CONE 6	X1	X2	X3	X5
EPK	30
Gerstley Borate	27
Neph Sy	147
Flint (Silica)	36
Whiting	33
Lithium Carb	27
TOAL	100
Soda Ash	30
Titanium dioxide	15

FIRING RAMP FROM JOHN POST’S EMAIL 10.10.2010
200 degrees an hour up to 2132
100 degrees an hour up to 2200
drop at full speed to 1800
150 degrees an hour down to 1300

I'll check my pieces tomorrow and update this post with glaze recipes, and make sure that I did not leave out any recipes of glazes that will be in this next firing.

I might even try to photograph the unglazed pieces, although, at this stage of the game, I am so tired that I don't remember which piece is which color. However, once they are fired, it should be pretty apparent what is what.

I hope!