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glaze test batch question

updated sat 12 feb 11

 

Cathi Newlin on fri 11 feb 11


Hey there ClayFolk!
Got a question for you...
I want to test about 10 different colorant combos in the same raku base
glaze.

I'd like to make a large batch of the dry base glaze (say 1,000 grams
for instance) and then divide it into 10 small portions of (for
instance) 100 grams each and then add the colorants to the smaller portions=
.

One side of my brain says this is perfectly logical, but the other is
saying that getting all the dry ingredients in the base glaze uniformly
mixed is unlikely, and therefore this won't work.

So, I thought I'd throw that out there.
I'm guessing some of you can give me some insight into whether this
would work?
thanks!

--
Cathi Newlin, Angels Camp, Ca
box49@caltel.com
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Boxers in California Shelters:
http://www.CaliforniaBoxers.com
Got Pots?
http://www.etsy.com/shop/theSquarePeg

William & Susan Schran User on fri 11 feb 11


On 2/11/11 2:45 PM, "Cathi Newlin" wrote:

> I want to test about 10 different colorant combos in the same raku base
> glaze.
> I'd like to make a large batch of the dry base glaze (say 1,000 grams
> for instance) and then divide it into 10 small portions of (for
> instance) 100 grams each and then add the colorants to the smaller portio=
ns.

No problem, put the 1,000 gram batch into a sealable plastic container, giv=
e
a good shake up, making sure lid is securely fastened. Wait, as they say,
until the dust settles, then dry sieve batch through whatever you sieve you=
r
wet glazes through, such as 30m & 60m screens. Then weigh out your 100 gram
batches. Don't be surprised if your last batch is a few grams short...

Bill

--
William "Bill" Schran
wschran@cox.net
wschran@nvcc.edu
http://www.creativecreekartisans.com

Paul Lewing on fri 11 feb 11


On Feb 11, 2011, at 11:45 AM, Cathi Newlin wrote:
I'd like to make a large batch of the dry base glaze (say 1,000 grams
for instance) and then divide it into 10 small portions of (for
instance) 100 grams each and then add the colorants to the smaller
portions.

One side of my brain says this is perfectly logical, but the other is
saying that getting all the dry ingredients in the base glaze uniformly
mixed is unlikely, and therefore this won't work.

It is perfectly logical, except that you add the water to the proper
consistency, sieve it, and then divide it. Clear plastic cups make it
easy to see that you have 10 equal amounts.
Paul Lewing
www.paullewingtile.com
www.paullewingart.com

KATHI LESUEUR on fri 11 feb 11


When I was in school we would make up a large batch of a base glaze, say =
=3D
10,000 grams (that seemed a lot of glaze at that time). We would then =3D
divide it equally into ten containers and add colorants to each =3D
container. It works if all of your smaller containers are identical and =3D
you can see through them so that each has the same amount of base.=3D20

KATHI LESUEUR
http://www.lesueurclaywork.com



On Feb 11, 2011, at 2:45 PM, Cathi Newlin wrote:

> Hey there ClayFolk!
> Got a question for you...
> I want to test about 10 different colorant combos in the same raku =3D
base
> glaze.
>=3D20
> I'd like to make a large batch of the dry base glaze (say 1,000 grams
> for instance) and then divide it into 10 small portions of (for
> instance) 100 grams each and then add the colorants to the smaller =3D
portions.
>=3D20
> One side of my brain says this is perfectly logical, but the other is
> saying that getting all the dry ingredients in the base glaze =3D
uniformly
> mixed is unlikely, and therefore this won't work.
>=3D20
> So, I thought I'd throw that out there.
> I'm guessing some of you can give me some insight into whether this
> would work?
> thanks!
>=3D20
> --
> Cathi Newlin, Angels Camp, Ca
> box49@caltel.com
> =3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D=
3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D
=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D=3D3D
> Boxers in California Shelters:
> http://www.CaliforniaBoxers.com
> Got Pots?
> http://www.etsy.com/shop/theSquarePeg
>=3D20

June on fri 11 feb 11


Paul, before I got a good digital scale, I often dry mixed that amount of d=
ry base glaze in a large mortar, then weighed out the individual batches wi=
th the added oxides.

Regards
June

http://wwww.shambhalapottery.blogspot.com
http://groups.yahoo.com/group/sodasaltfiring/
http://www.shambhalapottery.com

----- Original Message -----
From: Paul Lewing
To: Clayart@LSV.CERAMICS.ORG
Sent: Fri, 11 Feb 2011 21:57:35 -0000 (UTC)
Subject: Re: Glaze Test Batch Question

On Feb 11, 2011, at 11:45 AM, Cathi Newlin wrote:
I'd like to make a large batch of the dry base glaze (say 1,000 grams
for instance) and then divide it into 10 small portions of (for
instance) 100 grams each and then add the colorants to the smaller
portions.

One side of my brain says this is perfectly logical, but the other is
saying that getting all the dry ingredients in the base glaze uniformly
mixed is unlikely, and therefore this won't work.

It is perfectly logical, except that you add the water to the proper
consistency, sieve it, and then divide it. Clear plastic cups make it
easy to see that you have 10 equal amounts.
Paul Lewing
www.paullewingtile.com
www.paullewingart.com

Snail Scott on fri 11 feb 11


On Feb 11, 2011, at 1:45 PM, Cathi Newlin wrote:
> I'd like to make a large batch of the dry base glaze (say 1,000 grams
> for instance) and then divide it into 10 small portions of (for
> instance) 100 grams each and then add the colorants to the smaller =3D
portions...


This works very well indeed. Just mix the full
batch well. Never had trouble with this method.

-Snail=3D