Posts Tagged ‘zircopax’

Steve Loucks Glossy White ^6 ox or red –Roxanne Hunnicutt

April 23, 2012 Leave a comment


Nepheline Syenite – 50

Whiting  – 15

Gerstley Borate  – 10

Frit 3134  – 5

EPK  – 8

Silica  –  12

Zircopax  – 10

Glossy opaque white glaze. It is a stable glaze and works well for a liner glaze. good for other glazes to  be sprayed on top. Stable white in oxidation or reduction.

Paul’s White ^5 –Donna Kat

April 18, 2012 Leave a comment

Paul’s White ^5

  • Custer Feldspar 43
  • Gerstley Borate 15.7
  • Flint 12.1
  • Whiting 12
  • Talc 8.6
  • Zircopax 8.1
  • bentonite 1

White Satin Matt ^6 –Donna Kat

April 11, 2012 Leave a comment
 “White Satin Matt ^6″
  • Gerstley Borate 32
  • Talc 14
  • Kona Feldspar 20
  • EPK 5
  • Silica 29
  • Bentonite 2
  • Zircopax 5

note that this is basically the same glaze as Toby’s Red but with different colorants.  Toby’s red is stable because of the large amount of RIO (I believe).  This glaze is low on A2O3.  It is a companion glaze to the TOAST and when mixed with it in various amounts can give you a wood fired look (Richard Busch – Pottery Making Illustrated Nov 2005).

Shanner Butter ^10 –Jane Serigne Brieden


Shanner Butter

Custer Feldspar 28.0,

Silica 20.0,

Whiting 6.0,

EPK 4.0,

Talc 5.0,

Gerstley Borate 12.0,

Zircopax 12.0,

Zinc Oxide 5.0,

Rutile 5.0,

Bentonite 3.0


Stoneware with Oribe first, then Shanner Butter. Then I accented with Temmoku on rim and in creases.

Maybe Yello ^10 red

April 4, 2012 2 comments

Maybe Yellow ^10 red’

Neph sye        1908

Dolomite          633

OM4                   129

EPK                    240

Zircopax            375

Tin Ox                  70

RIO                       15


white clay better – darker on dark clay cool fast-shiny

Rick Burman Raku Glaze (his Turqouise) –Travis Berning

March 14, 2012 Leave a comment
 Gertsley Borate 33.02
 Neph. Sy. 16.64
Spodumene 16.98
 Lithium 17.31
 Zircopak  16.05
Copper Carb. 2.17

Oil spot glaze combo ^6 ox –John Britt

Oil spots doesn’t work all that well at cone 6 but his combo does give some good results:

Oil Spot Combo #1 Cone 6 Apply Three thick coats!
47.83 g.- G-200
23.91g. – Silica
17.39 g. – Whiting
10.87 g. – EPK
9.78 g – Red Iron Oxide

Oil Spot Combo #2 Cover Glaze (apply over #1) Cone 6 Then put this over
30g. –Custer Feldspar
30g. – Gerstley Borate
25g.- Silica
5g. – EPK

For White add: 10g. Zircopax.
Add: 5% 6485 Yellow
5% 6001 Pink
5% 6363 Blue
5% 239416 Degussa yellow
4% Copper Carbonate
2% cobalt carbonate
2% copper carbonate/2% cobalt carbonate/2% chrome oxide
8% red iron oxide
2% chrome oxide
2% nickel oxide

Arch Pike’s Orange ^6 ox

March 5, 2012 2 comments

Neph Sye                  24

Whiting                     18

Silica                        18

Ball Clay                    9

Zinc Ox                      6

Rutile                        19.20

Zircopax                       6

Very Nice Glaze, orange, matt.  Really nice on a speckled clay body, with brown specks.

Stony Matte ^10 fired to ^6 –Cara Joy De Celles

February 8, 2012 Leave a comment


Stony Matte

EPK 22
Whiting 6
Dolomite 20
Feldspar G200 52

Tin Oxide 5
Zircopax 5

(Because this was under fired it may not be food safe, please test or have tested for safeness before using on a surface in which food comes in contact with.  Thank you.)

Oil Spot ^6 John Britt –Mimi Champlin

September 20, 2011 Leave a comment
  •  ^6 Oil Spot glaze from a John Britt workshop. Fires in oxidation.

    Oil Spot Combo #1 (three coats), specific gravity 165
    G-200 feldspar: 47.83%
    Silica: 23.91%
    Whiting: 17.39%
    EPK: 10.87%
    Red Iron Oxide: 9.78%

    Oil Spot Combo #2 — Cover glaze (apply over #1) (two coats)
    Custar feldspar: 30%
    Gerstley Borate: 30%
    Silica: 25%
    EPK: 5%
    Zircopax: 10%

     The mechanism of traditional oil spot (which is high fire, not Cone 6 range) is based on the instability of the red iron oxide molecule above about 2250 F. Orton Cone 6, if you are using the large cones, is going to barely reach that temperature. The slower you fire the LOWER the end point temperature will be at any given cone. (Remember, cones measure heat work, not tmperature.) At 270F per hour rise, Cone 6 end-point is 2266-ish F. So it will start to break the bonds…. but it is “close”.
  • I’d suggest that you fire the last about 200 F of the up cycle at a fast rate………like 270 to 300 F per hour (if your kiln will do it). That will make sure that you end at a “hot” remperature for the Cone 6 dropping. Then play with the soak period at the end to allow time for the evolution of the oxygen gas to bubble out of the underlying glaze layer and bring the “spots” to the surface. It will require some testing for you to see how long a soak gives you what type/size of spots.
    This is info from a conversation on ceramic art daily, by John Baymore

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