SURPRISE MIDRANGE FIRING WITH PAULA RUTLEDGE

NOTE: This firing reached 5.5 -- the cone 6 in the kiln bent slightly but did not totally bend over.


I mixed glazes this week -- I did a gloss red using the cone 6 gloss white recipe and leaving out the zircopax and substituting dark red mason stain 6021.  I doubled the recipe, and since a single recipe called for 10 grams of zircopax, I put in 20 grams of dark red mason stain in the glaze.  That's a LOT of mason stain -- and its damn expensive -- $44 a lb.   I just ordered a quarter pound of it from Bailey's, as well as a quarter pound of dark red 6088 which is a tad richer red. Below is a photograph of the Gloss Red fired, and the recipe and firing ramp we used.

 Gloss Red

This teabowl had several coats of the gloss red recipe below brushed on. I am going to use it for Angelina Jolips LIPS on the mug I made. It is a stable glaze. It does not move.

GLOSS RED RECIPE  WAAAAY BELOW. I dont know why it spaced it so weirdly.

CONE 6	X1	X2	X3	X5
Neph Sy	35	70
Silica	21	42
EPK	10	20
Whiting	8	16
Gerstley Borate	18	36
TOTAL
COLORANTS
Dark red 6021 Mason stain	10	20

I brushed it on a teabowl several coats thick and put it on a "cookie."  Hope it turns out to be a gorgeous glossy cherry red.  I want to use it on the Angelina Jolips mug at the top of this blog.

It did turn out to be a gorgeous gloss red.  However, the next time I make it, I'm going to use 12 grams of dark red mason stain 6021.  Its a tad grainy when fired to cone 5.5.

SATIN CHERRY RED GLAZE

This satin Cherry Red glaze is gorgeous.  It is also a stable glaze and does not move and can be brushed on nice and thick. I fired it last week also.  It is a great glaze -- but it is NOT glossy like the Gloss Red.  It is a beautiful satin smooth coat.
It's a lovely bright primary red.  The glaze recipe is in this link:
http://myclayjournal.blogspot.com/2010/09/firing.html
Scroll down to find it.  This indoor shot of this glaze came out beautifully! It's a great glaze.

I also mixed up some rasberry blue from Alisa Clausen's Sankey database -- its a gorgeous color of deep rich turquoise blues.

Unfortunately, I wrote down COBALT OXIDE instead of cobalt carbonate.

-- the glaze came out a lovely shade of GRAPE! it was .4 of a gram of cobalt oxide. I'll see how grape it gets with Cobalt Carb in my next test batch.  I emailed Alisa Clausen and she cleared up my confusion about the notes on her flickr account.  The colorants added for the Raspberry blue are supposed to be 1 cobalt carbonate and 0.5 Red Iron Oxide.

Here is the result of adding all four colorants of Chrome oxide, tin oxide, Cobalt oxide and Red Iron Oxide -- you get a lovely grape color!!

GRAPE GLOSS 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

Here is the proper color and recipe:

RASPBERRY BLUE

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
Cobalt Carb	1	2	3	5
R I O	0.5	1	1.5	2.5

I'm make it again tomorrow with cobalt carbonate, plus I'm making the two other glazes listed in Alisa's notes.  She emailed me and clarified the colorants.  Here they are as follows:


Jeanies Purple
ADD
0.2 Chrome oxide
3.8 Tin Oxide
0.6 Cobalt Carb.

Raspberry Blue
ADD
1.0 Cobalt Carb.
05. RIO

MC6G Raspberry (MC6 = Mastering Cone 6 glaze -- the other two glazes are spin-offs from this original recipe)
ADD
0.2 Chrome oxide
7.5 Tin oxide

HEIDY'S EGGSHELL GLAZE

I also am testfiring Heidy's eggshell glaze.  She is a glazebuddy that I met through picassa when I found her glaze tests.  They are awesome.  Here is a link to her picassa tests:

http://picasaweb.google.com/amapolablau

I think I made her link a favorite link on this blog.

Here is a photo of the eggshell glaze from a piece that Heidy did

I used it on a textured bottle that I did, and also on a plain bowl.  I brushed on the glaze in several coats.
Here are my pieces fired to cone 5.5 
The glaze is awesome! Its very stable and does not move, and its beautiful!

 I love the results, even though there is no smudging like there is in her firing.  We will use centigrade temps and use her firing ramp exactly for the next firing.

Here is the recipe for this glaze:

EGGSHELL -- tried and true from Ceramic Arts Daily

CONE 6	X1	X2	X3	X5
Whiting	9.5	19	28.5	47.5
Zinc Oxide	5.5	11	16.5	27.5
Frit 3124	44.5	89	133.5	222.5
Custer Feldspar	20	40	60	100
Bentonite	7.5	15	22.5	37.5
Kaolin	5	10	15	25
Silica	8	16	24	40
TOTAL	100	200	300	500
OXIDES
Tin Oxide	9	18	27	45
RIO	3	6	9	15

I did a triple batch of this glaze because its from Ceramic Daily's tried and true glazes, and I really like the way it breaks and flows.  I love the color.  I'll use it a lot if it comes out right.  I used her firing ramp for it also:

FIRING RAMP IN FARENHEIT – no holds, no slow cool
RAMP 1 --- 122F per hour to 212F
RAMP 2 --- 356 per hour to 2048
RAMP 3 --- 122F per hour to 219S


Heidy's centigrade firing ramp: 50-100, 180-1120, 50-1215, end. (no soak, no cooling)

I was not expecting to be able to fire these glazes until Monday, but because Paula wanted to fire some of hers, we could put our work together and have a small firing! So Saturday morning I was able to see how these glazes turned out! Paula and I had a great time firing and a great time working together doing stuff on Saturday morning.

much love

DJ