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testing glazes

updated mon 12 oct 09

 

Mel Jacobson on wed 20 aug 97

sometimes i like to fill my entire kiln with just new glazes that i am
testing. (my wife gets mad at when i do that) sometimes i fire the whole
kiln with just one new glaze.
sometimes i throw out the whole firing.
but if it works..............
i got a bunch of great pots and a new glaze.

i never know what to do with little squares with glaze on them.
they never look like pots.
mel.mn.
all reved up about wobble.
http://www.pclink.com/melpots

Dannon Rhudy on thu 21 aug 97

----------------------------Original
message----------------------------
sometimes i like to fill my entire kiln with just new glazes that
i am
testing. ,,, never know what to do with little squares with glaze
on them...they never look like pots....
mel.mn.

--------------------------

I agree about the glaze tests. I test on small pots; simply not
the same on a strip of clay, or even a "glaze mouse". Then, if
I like it, I make a test on a glaze mouse and keep it for visual
record...if I have that, then I know the glaze worked on a real
pot.

Dannon Rhudy
potter@koyote.com

Susan L. Ross on fri 22 aug 97

----------------------------Original message----------------------------
,,, never know what to do with little squares with glaze
on them...they never look like pots....
mel.mn.

--------------------------

I test on small pots ... or even a "glaze mouse".
Dannon Rhudy
potter@koyote.com

----------------------------

Hi Dannon:

This mudhead here can't figure out what a "glaze mouse" is. I keep
envisioning a cross between a furry scurrying critter and a blob of plastic
with a plastic-coated umbilical cord connecting me to you!

Where's my Clay(we)bster's?

Thanx!

:-) Su
RubySuMoon@aol.com

Dannon Rhudy on sat 23 aug 97


,,, never know what to do with little squares with glaze
on them...they never look like pots....
mel.mn.

--------------------------

I test on small pots ... or even a "glaze mouse".
Dannon Rhudy
potter@koyote.com

----------------------------

Hi Dannon:

This mudhead here can't figure out what a "glaze mouse" is. I keep
envisioning a cross between a furry scurrying critter and a blob
of plastic
with a plastic-coated umbilical cord ....

----------------------

Afraid it is very mundane: just a thickish coil of clay, about a
hand's width, placed in the hand and squeezed gently between palm
and fingers. Doesn't look a lot like a mouse, actually. But the
ridges produced by squeezing in that way make a place for the
glaze to break, to give an idea of how the glaze behaves when
breaking as well as where smooth. Then, press or tap lightly on
the end to give a stable foot for firing.

Dannon Rhudy
potter@koyote.com

CDANIELLE on sat 23 aug 97

Hi Susan,
I had an instructor who prefered "glaze mice" over test tiles. I can't
remember how he made them, but I don't think it's important. Basically
you take a small piece of clay and hand form it giving it a little
texture so you can see how the glaze will look on different surfaces and
give it a flattened end to stand on. Of course this isn't something you
would want to spend a lot of time on because your just going to use it
to test glazes.
/)(\ Glaze mouse. I think this is how he made them:
/)(\ Make fat short roll. Lay on table. Flatten
/)(\ sides with thumbs giving center look of a spine
///\\\ Squish bottom so can stand. Not sure where the
~~~~~~~~Mouse is in all of this.
Gabe Thomas
cdaniell@prodigy.net
>
> This mudhead here can't figure out what a "glaze mouse" is. I keep
> envisioning a cross between a furry scurrying critter and a blob of plastic
> with a plastic-coated umbilical cord connecting me to you!

> RubySuMoon@aol.com

Malone & Dean McRaine on sun 24 aug 97

Aloha everyone:
Re: What to do with all those glaze tests..
I test my glazes on small (2x2) cups and use the ones I don't want to keep
for a giveaway. The Native Americans considered that you gained status in
the tribe according to how much you gave away to the tribe, kind of the
reverse of how we think. I give my little cups to kids at shows or visitors
to my studio. They're good pencil holders. Sometimes sales of other pieces
are a result but there is always a great connection made, and I don't have
all those ugly old tests piled up in the corners..
Dean

Peggy Heer on mon 25 aug 97

Hi All...for testing glazes, I make freindship pots. The idea of a
friendship pot was given to me as a gift to share with students and potting
firends by Thancoupie (means Flower). She is an Aboriginal potter/artist
from Australia. I had the honor of hosting her in my home for 6 weeks
during the 1983 Universaide Summer Games where she demoed and created a
mural of the Dream Time . It now hangs in our Convention Centre here in
Edmonton. A whole other story here. ;>}}}
Anyway the friendship pots are made from a small ball of clay, which can be
textured or not....I texture mine to show breaking glaze colors....then you
simply pound out the ball of clay over your elbow, knee, nose, head, butt
if the ball is big enough ;>}}} and pull a little leg out just where the
palm of your hand made its mark so that it will stand straight on the
table. I use these as gifts or give-aways to kids, to people who pick them
up and wonder how they are made and to folks who cannot afford to buy a
pot. I also teach how to make them in a beginners class and so everyone has
a good pot to take home on the first class. The underside of the pot shows
my fingers and hand print so if you pick one up and hold it the way I made
it our hands meet...thus friendship pot. Thancoupie would be pleased that
now everyone in the world knows how to make one. ;>}}}
They are great pots for testing glazes. I always glaze 2 in the same glaze
so I have one for giveaway and one for to set on the lid of my glaze pail,
which is marked with the kind of clay, fire temp, and glz. name.
As Always in Clay Peggy

Peggy Heer / Heer Pottery E-Mail p4337@connect.ab.ca
52120 Range Road 223
Sherwood Park, AB. Canada T8C 1A7
Phone (403) 922-6270
http://www.ffa.ucalgary.ca/artists/pheer/

Virgil & Susan Leise on tue 22 sep 98

I like to test glazes by using them on votive candle holders.
That way it shows how the glaze will be on a pot shape instead
of on a flat tile...and I can sell them no matter what they
turn out like!! I hate to waste anything. I have an electric
kiln and fire to cone 6. My loads aren't huge but always the
first one I try to put in the candle holders ..just to see how
the glazes are going to react this time around.
I have to make a comment about the kiln wiring too...make sure
you get the wire you want and the 60 amp breaker..
Susan in Nebr.

Miss Lo on wed 23 sep 98

------------------
On Tue, 22 Sep 1998 17:47:36 EDT, Virgil =26 Susan Leise wrote:

=3E----------------------------Original message----------------------------
=3EI like to test glazes by using them on votive candle holders.
=3EThat way it shows how the glaze will be on a pot shape instead
=3Eof on a flat tile...and I can sell them no matter what they
=3Eturn out like=21=21 I hate to waste anything. I have an electric
=3Ekiln and fire to cone 6. My loads aren't huge but always the
=3Efirst one I try to put in the candle holders ..just to see how
=3Ethe glazes are going to react this time around.

thanks for the great suggestion=21 I also test on what I call =22little
cylinders=22, as they show shape, glaze reaction to inside out,
runniness, throw lines, etc. I fire them in a full kiln - they take
up only an itty bitty amount of space, which is great. No more than a
test tile, really.

I have never thought to use them as votive candle holders though.
What a great idea=21=21 i never bothered trimming the bottoms, as i only
used them for tests, but now perhaps I will, and give the good ones a
life after the glaze test=21

Christine Pereira on thu 24 sep 98

----------------------------Original message----------------------------
>>I like to test glazes by using them on votive candle holders.
>>That way it shows how the glaze will be on a pot shape instead

>thanks for the great suggestion! I also test on what I call "little
>cylinders", as they show shape, glaze reaction to inside out,


I make very small bowls (1/8 to 1/4 pound) to test my glazes. My husband is
the cook in our house (lucky me) and he calls these his "prep bowls" and he
uses them to put his spices and other ingredients in when he is preparing a
recipe. Since starting to do this, I have found that lots of folks like
these little bowls for recipe preparation and to use as butter bowls when
eating crab, lobster, etc. It gives me usable glaze tests and then someone
else gets to use it too! I like this much better than glaze trees or tiles.

<+><+><+><+><+><+><+><+><+><+><+><+><+><+>
Christine Pereira, Systems Admininstrator
Native American Rights Fund, Boulder, Colorado
pereira@narf.org
<+><+><+><+><+><+><+><+><+><+><+><+><+><+>

Joyce LEE on wed 10 nov 04


I've made several thousand glaze tests since being active in
pottery for five years now (not counting the last two when
other issues took precedence). I am satisfied with my progress
based on going over the top on testing. I am naturally curious,
not terribly dumb, and like to SEE what Might Happen If.....

How would I ever have known that shino was such a potterly
glaze and that I would number it among my all-time loves IF
I had stopped with the many whites, creams, pastels and blacks I
tested in the beginning......and had I simply continued working with=20
all the glorious combinations I could summon without considering
reds, tenmokus, celadons and on and on??? I would have
missed reduction altogether..... no salt firings, no wood firings,

Even if I eventually wind up where I began (could happen!), there
was no wasted time or effort. Learning and, more importantly,
caring was paramount.... still is.... and ever will be. I am
exactly the kind of potter I want to be..... way more than I ever
expected to be, thanks to Clayart. Throwing, of course, is my
bugaboo and Mendocino will help there...... absolutely!

Mr. Mayor, should I accept that I do soup bowls okay,
as well as a few other forms...... accept that they could
clearly stand improvement..
and concentrate forever on improving those forms? Should I
forget bigger,
smaller, wider, taller bottles, teapots, abstract shapes, ovals,
plates, beads....... stay with functional..... try ceramic art ...
work with
tiles....... Will I become a Better Potter, therefore a Better
Person...... by limiting myself? Do I really want to be the
Best Soup Bowl Creator in the world?=20

Not an unworthy objective, that's true, but not for me.... and
that doesn't mean for a second that there's something wrong
with me and the thousands who feel as I do. We're not
apologizing; we're lovingly saying that you are full of it, Mr.
Mayor........ and I think you do not practice what you preach....
recall
Mother In Law Blue, do you?=20

Joyce
In the Mojave desert of California U.S.A.

Ron Roy on thu 18 jun 09


Hi Mary,
The main problem with small kilns is - they cool fast. If you want to see
what your tests will look like in a bigger kiln you need to slow the firing
and cooling down in the small kiln - to match the times in the larger kilns=
.
A controller is a great way to do that.

RR

On Wed, Jun 17, 2009 at 10:33 AM, Mary Adams wrot=
e:

> I am getting back to pottery after a long lay-off with an injury. It's
> like starting all over again in many respects. Primarily, what I could u=
se
> advice on is how to test glazes. Do you all advise to get a test kiln. =
I
> have finally gotten again where I can produce something rather large and
> have selectively chosen a couple of favorite clays. I have glazes that
> worked on other clays; but, now that I've moved I have selected other mo=
re
> local clays and so am really starting all over again with glazes. But,
> still have all the testing to do on glazes. I don't want to put the glaz=
es
> I haven't tested on the big pots or tiles but am anxious to get them thro=
ugh
> the cycle. I'm suspecting that a test kiln is the answer.
>
> m
>



--
Ron Roy
15084 Little Lake Road
Brighton, Ontario, Canada
K0K 1H0

Maggie Furtak on thu 18 jun 09


Date: Wed, 17 Jun 2009 08:33:45 -0600
Hey Mary,

I'd say skip the test kiln and test on small pots. If you are just getting=
back to things again, you might as well get some throwing practice too, wh=
ile you are at it. I usually test on small bowls or cups thrown off the hu=
mp. That way, if anything turns out well, I can sell the piece for $5-$10 =
and get a little pay back for the time spent testing. (:

-Maggie Furtak

Pate Ceramics
pateceramics.etsy.com
pateceramics.blogspot.com


From: Mary Adams
Subject: testing glazes

I am getting back to pottery after a long lay-off with an injury. It's =3D
like starting all over again in many respects. Primarily, what I could =3D
use advice on is how to test glazes. Do you all advise to get a test =3D
kiln. I have finally gotten again where I can produce something rather =3D
large and have selectively chosen a couple of favorite clays. I have =3D
glazes that worked on other clays; but, now that I've moved I have =3D
selected other more local clays and so am really starting all over again =
=3D
with glazes. But, still have all the testing to do on glazes. I don't =3D
want to put the glazes I haven't tested on the big pots or tiles but am =3D
anxious to get them through the cycle. I'm suspecting that a test kiln =3D
is the answer.=3D20

m

ELAINE CARROLL on sun 11 oct 09


I am trying to search the archives to find the different ways potters =3D
test glazes, ie, do you use test tiles, bowls, etc Thanks for your help, =
=3D
Elaine

Lee Love on sun 11 oct 09


On Sun, Oct 11, 2009 at 10:38 AM, ELAINE CARROLL w=
rote:
> I am trying to search the archives to find the different ways potters tes=
t glazes, ie,
>do you use test tiles, bowls, etc Thanks for your help, Elaine
>

Check out the Currie Grid method:

http://ian.currie.to/glazeimages/Sept2002/stability.html

--
--
Lee Love, Minneapolis
"The tea ceremony bowl is the ceramic equivalent of a sonnet: a
small-scale, seemingly constricted form that challenges the artist to
go beyond mere technical virtuosity and find an approach that both
satisfies and transcends the conventions." -- Rob Sliberman
full essay: http://togeika.multiply.com/journal/item/273/

Dinah Snipes Steveni on sun 11 oct 09


For a tile-- to be fired flat rather than on edge I=3DC2=3DA0fire flat. Oth=
erwi=3D
se I make a bowl then=3DC2=3DA0wire into=3DC2=3DA0wedges so the pieces are =
self-sup=3D
porting.. Before carving I use a tool(s) to make a couple of lines in the s=
=3D
ide to see how=3DC2=3DA0glaze flows. I always put a hole in samples to atta=
ch t=3D
o glaze bucket handle.=3D20




=3DC2=3DA0=3D20

Dinah=3D20
http://www.dinahsnipessteveni.com=3D20
http://www.dianthusceramics.blogspot.com=3D20
http://www.skagitartiststogether.com=3D20

David Hendley on sun 11 oct 09


Since I use glazes on mostly vertical surfaces, I test glazes on
vertical test tiles. I made a test tile die for my extruder and
can extrude 100 tiles in 5 minutes.
I designed small walls, or lips, on the bottom of the die, so the
tiles will catch any stray glaze runs.
I also designed the die so there are 2 convex bands on one
side and 2 concave bands on the other side of the test tiles,
to show how the glaze responds to edges and changes in
texture of the clay.
David Hendley
david@farmpots.com
http://www.farmpots.com


----- Original Message -----
I am trying to search the archives to find the different ways potters test
glazes, ie, do you use test tiles, bowls, etc Thanks for your help, Elaine

Des & Jan Howard on mon 12 oct 09


Elaine
Our tests are done on 75mm strips cut from extruded
handle scraps, stuck upright in a clay/sand blob. Each
test is on two strips, one of the white porcelaneous
clay body & one of the standard grey stoneware.
Examples here:
http://www.luepottery.hwy.com.au/austcerdisclistpics.htm
Des

ELAINE CARROLL wrote:
> I am trying to search the archives to find the
> different ways potters test glazes,
> ie, do you use test tiles, bowls,

--
Des & Jan Howard
Lue Pottery
Lue NSW
Australia
2850

02 6373 6419
www.luepottery.hwy.com.au
-32.656072 149.840624