search  current discussion  categories  glazes - cone 4-7 

glaze test for waxy white 2, cone 6 oxidation

updated fri 10 jun 05

 

Alisa Clausen on tue 7 jun 05


Glaze test for Waxy White 2, cone 6 oxidation

Glaze tested on white midrange stoneware fired in electric oxidation to =
1220c. (2228f)

Source: Maurice Weitman
Credited to: Ababi Sharon

Firing ramp:
100c p/h to 600c (212f - 1112f)
150c p/h to 1140c (302f - 2084f)=20
80c p/h to 1220c (176f - 2228f)
15 min. soak
cool down max. to 1100c (2012f)
Hold 1 hour
Shut off kiln

Recipe:
10.3 Neph. Syenite
35.5 Wollastonite
12.7 Frit 3134
1.1 Talc
17.2 EPK
23.2 Flint
-------------------
100 gram

Note: All raw materials are measured up or down to the nearest half =
decimal. =20
Colorants or additives to a 100 gram test batch are measured in percent =
to the 100 gram test batch.

Results:
Semi mat, covering, white glaze. Waxy and silky feel, slight sheen on =
surface, milky in color

Regards from Alisa in Denmark

Ron Roy on thu 9 jun 05


This looks like a stable glaze - technically a calcium matte glaze.

RR


>Glaze tested on white midrange stoneware fired in electric oxidation to
>1220c. (2228f)
>
>Source: Maurice Weitman
>Credited to: Ababi Sharon
>
>Firing ramp:
>100c p/h to 600c (212f - 1112f)
>150c p/h to 1140c (302f - 2084f)
>80c p/h to 1220c (176f - 2228f)
>15 min. soak
>cool down max. to 1100c (2012f)
>Hold 1 hour
>Shut off kiln
>
>Recipe:
>10.3 Neph. Syenite
>35.5 Wollastonite
>12.7 Frit 3134
>1.1 Talc
>17.2 EPK
>23.2 Flint
>-------------------
>100 gram
>
>Note: All raw materials are measured up or down to the nearest half decimal.
>Colorants or additives to a 100 gram test batch are measured in percent to
>the 100 gram test batch.
>
>Results:
>Semi mat, covering, white glaze. Waxy and silky feel, slight sheen on
>surface, milky in color
>
>Regards from Alisa in Denmark
>
>______________________________________________________________________________
>Send postings to clayart@lsv.ceramics.org
>
>You may look at the archives for the list or change your subscription
>settings from http://www.ceramics.org/clayart/
>
>Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.

Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513