Eleanora Eden on sat 25 oct 97
Hi Bill and all,
Looking thru my files for Bill found this one that others might want to see.
>from: Harold R Deeley
>Subject:
Recipe: Mason Underglaze Formula
>To: Multiple recipients of list CLAYART
>X-Status:
>
>----------------------------Original
message----------------------------
>This recipe was given to me by the lab
at Mason Color Works Inc. This
>should be helpful to those other clayfolk
who want to mix their own
>underglazes. Personally I dislike small jars and
prefer to mix up large
>quantities that I can get my brushes into without
feeling that I have to
>look in the jar to see how much is left with every
dip of the brush. It has
>worked well for me in my initial testing. For
those high fire folks: I
>haven't tried the Liquid with oxides yet but it
might work better than
>glycerine and would not brush off as
easily.
>
>Mason Color Works has used this recipe for 50 years.
>
>Glaze
Type: Underglaze formula (measured in parts)
>Components:
>F-4 Soda Spar
20
>Kaolin 10
>Ball Clay
5
>Frit (3124) 10
>
>Stain
40
>Liquid 75
>
>Liquid Components:
>Anti-freeze
1000cc
>Water 1000cc
>CMC Liquid
500cc
>
>CMC Liquid(30 gms CMC to 1 qt. water) and let sit for 2 days to
break down.
>
>Antifreeze is Ethylene-Glycol and is toxic. For a non-Toxic
substitution
>use Proplyene-Glycol as a direct substitution. This mixture
allows you to
>use a brush and paint directly on greenware without your
brush dragging.
>
>Notes: Stain can be a mixture of Stain and Opacifier if
a paler shade is
>desired.
>
>Further Note: I have substituted frit 3195
for 3124 in my own underglaze
>mix and it works well. Mason Color Works has
used this recipe for 50
>years.
>
>Regards,
>Harold Deeley
>Labrador,
Canada
>It's a crisp -35 C. and the Northern Lights are spectacular this
morning!
>
>
Eleanora Eden 802 869-2003
Paradise Hill
Bellows Falls, VT 05101 eden@sover.net
Greg Lamont on mon 27 oct 97
Bill, Harold, and all,
I don't know if I ever posted this underglaze recipe we've been using for a
large ceramic mural project. Some time ago I sent in a post looking for an
underglaze recipe my ceramics prof remembered seeing--one that contained
liquid laundry starch. Eventually it surfaced when a former ceramics lab
technician found it in her notes. It doesn't add up to 100% but that's the
way it is and it works! it works nonetheless. Here it is:
30 Frit 3124
30 EPK
30 Mason (or other brand) Stain (or combination of stains equalling 30%)
To this I added 3 coffee measuring spoons of Sta-Flo laundry starch to give
a consistency of slightly thin yogurt. The mixture was passed through an 80
mesh sieve to blend (a 60 mesh would probably be fine, but I didn't have
one). The only colors I've had to alter from the above ratios have been the
dark blues and dark purples (too dark), and the red (too translucent).
The colors flow nicely and coverage is very good. We're using a clear gloss
cone 04 glaze on top.
Try it, I think you'll like it!
Greg
At 11:16 AM 10/25/97 EDT, you wrote:
>----------------------------Original message----------------------------
>Hi Bill and all,
>
>Looking thru my files for Bill found this one that others might want to see.
>
>>from: Harold R Deeley
>>Subject:
>Recipe: Mason Underglaze Formula
>>To: Multiple recipients of list CLAYART
>
>>X-Status:
>>
>>----------------------------Original
>message----------------------------
>>This recipe was given to me by the lab
>at Mason Color Works Inc. This
>>should be helpful to those other clayfolk
>who want to mix their own
>>underglazes. Personally I dislike small jars and
>prefer to mix up large
>>quantities that I can get my brushes into without
>feeling that I have to
>>look in the jar to see how much is left with every
>dip of the brush. It has
>>worked well for me in my initial testing. For
>those high fire folks: I
>>haven't tried the Liquid with oxides yet but it
>might work better than
>>glycerine and would not brush off as
>easily.
>>
>>Mason Color Works has used this recipe for 50 years.
>>
>>Glaze
>Type: Underglaze formula (measured in parts)
>>Components:
>>F-4 Soda Spar
> 20
>>Kaolin 10
>>Ball Clay
>5
>>Frit (3124) 10
>>
>>Stain
>40
>>Liquid 75
>>
>>Liquid Components:
>>Anti-freeze
> 1000cc
>>Water 1000cc
>>CMC Liquid
>500cc
>>
>>CMC Liquid(30 gms CMC to 1 qt. water) and let sit for 2 days to
>break down.
>>
>>Antifreeze is Ethylene-Glycol and is toxic. For a non-Toxic
>substitution
>>use Proplyene-Glycol as a direct substitution. This mixture
>allows you to
>>use a brush and paint directly on greenware without your
>brush dragging.
>>
>>Notes: Stain can be a mixture of Stain and Opacifier if
>a paler shade is
>>desired.
>>
>>Further Note: I have substituted frit 3195
>for 3124 in my own underglaze
>>mix and it works well. Mason Color Works has
>used this recipe for 50
>>years.
>>
>>Regards,
>>Harold Deeley
>>Labrador,
>Canada
>>It's a crisp -35 C. and the Northern Lights are spectacular this
>morning!
>>
>>
>Eleanora Eden 802 869-2003
>Paradise Hill
>Bellows Falls, VT 05101 eden@sover.net
>
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