sharon miranda on sat 24 may 97
Here are some test results done recently. I used white stoneware from
Laguna and the firing schedule was:
13 hours
100 degress rise to 600 F
300 degrees to 2100 F
100 degrees to 2200 F
500 degrees to 2100 hold 40 minutes
slow cool down
The following were taken from the Clayart glaze data base on the web.
Turquoise glaze
64.95 Neph Sye
18.56 Stront.Carb
5.15 Lithium carb
6.19 EPK
5.15 silica
3.09 copper carb
0.21 bentonite
results: altho the recipe says to use lightly, I only got a small amount
of color where it was rather thick. This looks like a semimat turquoise, and
it was not very successful
Fake ash
46 frit 3195
34 whiting
20 epk
3% copper carb
very overfired. I wonder if this isn't misplaced in the cone 6 group -
Looks like it should be in lowfire.
E157 pink (see glaze database for recipe)
results were not pinek, but lousy grey.
Kemp 7: pale blue with flecks (see glaze database)
Nice glaze! At last! This is a beautiful pale blue with white flecks.
Semi mat. Bears retesting.
Pete Pinnells Weathered Bronze Green
AT LAST! It worked! I used the original recipe but smoothed out the
glaze with a wet paintbrush so there were NO bubbles at all. This is the most
beautiful glaze, a semimat bronze green with lots of variation. Thick
application is best. It does not run, but since it is so thick it's best
to avoid putting too far down on the foot.
Karen's green
this glaze crazes a lot, but I like it anyway. It
s a beautiful semimat green. Needs to be thick. It runs a bit.
Floating red
This is a lovely glaze, looks like bloodstone, with areas of red and kaki
green. However it runs like crazy, all over the shelf. Too bad I can't
sell the teapot with the shelf, a built in potholder...
Metallic black
I love this glaze - a silvery black that glistens in the sun.
But it runs and can't go too near the foot.
That's it, except for the floating blue, which has been very discussed
lately. Mine did have lots of tan in it and it is a high gloss glaze. It
works perfectly, except I found it a bit too slick and even commercial
looking. Almost like Bill Campbell's glazes.
e-mail me if you want further information.
Sharon
*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*
Sharon LaRocca-Miranda *
92 Morgan Street *
Oberlin, Ohio 44074 *
Sharon.Miranda@oberlin.edu *
. . . . . . . . . . . . . . . .*
* * * * * * * * * * * * * * * * *
Valerie Hawkins on mon 9 jul 01
I have been slowly testing glazes from the clayart archives in my attempt to
assemble a repertoire of reliable glazes. I'm a beginning potter working at
home in my spare time, so it's taking me a while to make my way throught the
many recipes I have collected. Here are some of my test results. I would
appreciate ANY feedback you might have.
Thank you to everyone who has contributed recipes to the archives!
All fired to cone 6
Tested on standard speckled brown stoneware (112 I think) unless otherwise
specified.
20 X 5
wollastonite 20
frit 3134 20
pioneer kaolin 20
custer feldspar 20
silica 20
Great glaze for a beginner!!! This was my first glaze attempt and it has
yet to fail on me. I have yet to find any really remarkable colorant
combinations for this, but it remains my transparent glaze of choice so far.
This is the glaze I will recommend to anyone new to glaze mixing.
Cream White
feldspar 45
whiting 10
zinc oxide 10
epk 10
silica 25
This looks simple enough but I have not been able to get a decent surface
out of this glaze. And it settles like a rock to the bottom of the bucket
almost instantaneously. The surface I getting is quite thin and rough
textured. An unpleasant surface. Any suggestions?
Butterscotch - Ababy Sharon
Frit 3134 25
dolomite 12
lithium carb 2
g-200 spar 10
ball clay 26
silica 25
add 9 titanium dioxide
4 rutile
This turned out quite pretty. Very nice surface. A warm light beige
mottled with hints of blue breaking to transparent where thin.
SCVC5
cornwall stone 40
frit 3124 9
talc 9
whiting 16
epk 10
flint 16
Very nice smooth matt surface. I have not had time to test with colorants
yet. Does anyone have any interesting colorant combinations for this
glaze?
Chun Clear - From the ceramic glaze handbook by Mark Burleson
soda feldspar 38
whiting 14
zinc oxide 12
ball clay (OM-4) 6
silica 30
add copper carbonate .25 to 1%
Tested on white stoneware. Very nice smooth shiny surface. Easy glaze to
mix and use. I used .25% copper carb and got a light celadon.
Ocean Green - From the ceramic glaze handbook by Mark Burleson, glaze by
Johannes Mellage and Beth Gore
EPK 5.4
feldspar 25.3
laguna borate 20
nepheline syenite 22
silica 18
add RIO 1.8%
rutile 2.8%
copper carb 3.5%
PUTRID!!! I've got to be doing something wrong!!! This glaze is so
beautiful in the book. A smooth dark earthy green. I'm getting a runny,
unnatractive brown. I've decanted some of the water off of this and will
try again with a much thicker application. Has anyone tried this glaze? I
also tried this recipe with cadycal in place of the laguna borate and the
results were the same. There is a companion glaze in the book that is meant
to be trailed over this, and the combination is stunning. I really want to
get this working.
Turquoise - From the ceramic glaze handbook by Mark Burleson, glaze by
Johannes Mellage and Beth Gore (accent to ocean green glaze above)
dolomite 12
kaolin 5
gb sub 12
feldspar 12
nepheline syenite 23
silica 5.5
strontium carbonate 15
zircopax 10
add copper carb 4%
Seems to be OK, but cannot get a good test because the ocean green is
failing so misserably. Caution - this is very runny!
Smooth opalescent base - from clay and glazes for the potter, Rhodes/Hopper
frit 3134 25
custer spar 45
cadycall 100 20
epk 10
Add 5% rutile - trail or brush over other glazes.
This seems to work well. I added 10% zircopax and have been using it to
accent the rims of pots glazed with a brown glaze ( 20 X 5 with RIO). I
gives these a pretty frosted accent.
Wodo White Base
50 nepheline syenite
25 dolomite
5.8 wollastonite
20 ball clay
add 1% cobalt oxide
5% rutile
I got a matt, light turquiose green with light blue where thick. Quite
pretty - I did have a bit of pinholing though. It seems like some one had
done a bowl with this and then covered the inside with a white liner glaze
with good results. If anyone remembers this please send me a note. I can't
seem to find this in the archive again.
Ron Roys Revised, Andie Tweakied Sapphire
frit 3134 37
feldspar 16
strontium carb 4
rutile 4.5
cobalt carb 2.5
china clay 16
kaolin 10
silica 17
bentonite 2
What a beautiful glaze!!!! Pretty deep cobalt blue with slight white
mottling. Breaking to a dark forest green where thin. Just gorgeous. More
character on speckled brown, but very pretty on white stoneware. Smooth
rich surface. I am getting some very fine pinholing. Maybe I applied a bit
thick. Does anyone use this and if so do you have a hydrometer reading for
it? I'm reading about 56.5.
Ebony
bernard slip 50
frit 3124 50
Andies Handful of earth
Redart 50
bernard slip 25
frit 3134 50
I grouped these together because I had similar dissapointing results. I can
see their potential, the coloration and breaking are wonderful, but I got a
tremendous amount of pinholing and cratering and the very surface on both
had a hard reflective quality that I didn't like. HELP! I really want to
make these work. I'm going to thin the glaze mixes and try again but any
suggestions would be greatly appreciated.
Thanks to all,
Valerie Hawkins
Charlotte, NC
Marianne Lombardo on tue 10 jul 01
Valerie,
Thanks for posting your test results. It's helpful for others to know how a
glaze works for someone else. Some of the glazes you have had pinholing
with are ones I have used successfully. Read the latest messages from
people regarding cooling down temperatures. Proper cooling is most
important to fix pinholing.
Also, are you using witness cones to verify when you reach cone 6? I've
found I cannot rely on the kiln sitter. Sometimes I have to override it and
start cooling down bit sooner.
I am the one that reglazed the inside of a bowl with on of the WoDo blue
combinations, using the 20x5 with 12% superfax. It came out very lovely and
smooth and mottled. Slow cooling was important though.
Marianne Lombardo
Omemee, Ontario, Canada
email: mlombardo@nexicom.net
Valerie Hawkins on tue 10 jul 01
Marianne,
I have not used a witness cone - I have very little experience with firing
so I got one of the programable electronic controllers and have not used
cones at all. I hadn't even thought about it! I believe that I can program
a slow cooling into the controller and I'm going to give that a try. I will
also get some cones and double check the temp with them.
Do electronic controllers tend to be reliable? I have no idea; I've just
been assuming that they were.
Thanks so much for the feedback!
Valerie
-----Original Message-----
From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.CERAMICS.ORG]On
Behalf Of Marianne Lombardo
Sent: Tuesday, July 10, 2001 8:38 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: cone 6 glaze tests
Valerie,
Thanks for posting your test results. It's helpful for others to know how a
glaze works for someone else. Some of the glazes you have had pinholing
with are ones I have used successfully. Read the latest messages from
people regarding cooling down temperatures. Proper cooling is most
important to fix pinholing.
Also, are you using witness cones to verify when you reach cone 6? I've
found I cannot rely on the kiln sitter. Sometimes I have to override it and
start cooling down bit sooner.
I am the one that reglazed the inside of a bowl with on of the WoDo blue
combinations, using the 20x5 with 12% superfax. It came out very lovely and
smooth and mottled. Slow cooling was important though.
Marianne Lombardo
Omemee, Ontario, Canada
email: mlombardo@nexicom.net
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Randy McC on sun 29 apr 12
Here is a site of some of my favorite glazes. Should be useful to those jus=
=3D
t starting out and others.
Mccallsc.tripod.com
=3D
William & Susan Schran User on sun 29 apr 12
On 4/29/12 3:34 PM, "Randy McC" wrote:
Mccallsc.tripod.com
Please provide complete URL - the address you give as a dot com does is
not found.
Bill
--
William "Bill" Schran
wschran@cox.net
wschran@nvcc.edu
http://www.creativecreekartisans.com
Ben Morrison on sun 29 apr 12
All those glazes are great, but they're partying like it's 1999.
-Ben
________________________________
From: Randy McC
To: Clayart@LSV.CERAMICS.ORG
Sent: Sunday, April 29, 2012 12:34 PM
Subject: Cone 6 Glaze tests
Here is a site of some of my favorite glazes. Should be useful to those jus=
t starting out and others.
Mccallsc.tripod.com
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