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The picture for this item is just one example of the Raku Crackle White glaze. This is technically a clear glaze (there's no opacifier in the recipe), but everyone refers to it as Crackle White. Feel free to experiment with underglazes, stains, and even non-raku glazes underneath this Crackle White glaze. You can also add stains or chemical colorants (like cobalt oxide, copper carbonate, etc) for dramatic results. You might really enjoy the experimentation!
As of Sept 29, 2023 this has been converted to use Gillespie Borate as Gerstley Borate is no longer available.
Mixing instructions: mix with water at a 1:1 ratio (pint of water to a pound of glaze) and apply two coats.
For more ways to use crackle white, check out Cindy's article https://www.brackers.com/cracklewhite/
Composition and Reference Numbers for Mason Stain 6404 Vanadium Yellow COMPOSITION: Al Sn Z -- REFERENCE NUMBERS: 1, 3, 6
REFERENCE CHART 1 Can be used as a body stain at high temperatures. 1a Use as a body stain only. 2 Maximum temperature - 2156° F. 3 Maximum temperature - 2300° F. 4 Maximum temperature - 1976° F. 5 Do not use zinc in glaze. 6 May be used with or without zinc. 7 Zinc not necessary, but gives better results. 8 Best results with no zinc. 9 Glaze must contain 12% to 15% calcium carbonate. COMPOSITION CHART Al Aluminum oxide B Boric oxide Ca Calcium carbonate Cd Cadmium Co Cobalt oxide Cr Chromium oxide Fe Iron oxide Mn Manganese dioxide Ni Nickel oxide Pr Praseodymium oxide Sb Antimony oxide Si Silicon dioxide Sn Tin dioxide Ti Titanium oxide V Vanadium Zn Zinc oxide Zr Zirconium dioxide
Composition and Reference Numbers for Mason Stain 6097 Cherry Red COMPOSITION: Cd, Se, Si, Zr -- REFERENCE NUMBERS: 1, 3, 6 This Mason Stain was formerly known by this number: K5997
REFERENCE CHART 1 Can be used as a body stain at high temperatures. 1a Use as a body stain only. 2 Maximum temperature - 2156° F. 3 Maximum temperature - 2300° F. 4 Maximum temperature - 1976° F. 5 Do not use zinc in glaze. 6 May be used with or without zinc. 7 Zinc not necessary, but gives better results. 8 Best results with no zinc. 9 Glaze must contain 12% to 15% calcium carbonate. COMPOSITION CHART Al Aluminum oxide B Boric oxide Ca Calcium carbonate Cd Cadmium Co Cobalt oxide Cr Chromium oxide Fe Iron oxide Mn Manganese dioxide Ni Nickel oxide Pr Praseodymium oxide Sb Antimony oxide Si Silicon dioxide Sn Tin dioxide Ti Titanium oxide V Vanadium Zn Zinc oxide Zr Zirconium dioxide
The low-fire Cone 06/04 Opaque Gloss glazes are all lead-free, dinnerware safe, and A/P non-toxic. These glazes require 2 to 3 coats by brushing for opaque coverage. In general, a more even appearance can be achieved by alternating the direction of brush strokes by 90° to the previous coat (i.e. first brush up and down the piece, next coat brush side to side). These glazes do not bleed together very much so they can usually be butted against each other without the colors running.
Composition and Reference Numbers for Mason Stain 6030 Mango COMPOSITION: Cd, Se, Si, Zr -- REFERENCE NUMBERS: 1, 3, 6
REFERENCE CHART 1 Can be used as a body stain at high temperatures. 1a Use as a body stain only. 2 Maximum temperature - 2156° F. 3 Maximum temperature - 2300° F. 4 Maximum temperature - 1976° F. 5 Do not use zinc in glaze. 6 May be used with or without zinc. 7 Zinc not necessary, but gives better results. 8 Best results with no zinc. 9 Glaze must contain 12% to 15% calcium carbonate. COMPOSITION CHART Al Aluminum oxide B Boric oxide Ca Calcium carbonate Cd Cadmium Co Cobalt oxide Cr Chromium oxide Fe Iron oxide Mn Manganese dioxide Ni Nickel oxide Pr Praseodymium oxide Sb Antimony oxide Si Silicon dioxide Sn Tin dioxide Ti Titanium oxide V Vanadium Zn Zinc oxide Zr Zirconium dioxide
Cone 6 oxidation (larger image): White Engobe fires matte white. Engobes are used to coat your clay body to your preferred finish/color and are a great base to achieve variability in your glaze results. Cone 10 reduction (smaller image): No change. Tips: Can be applied to wet clay, greenware or soft fired, cone 04 bisque. Engobes are often used for a variety of decorative techniques, such as sgraffito and majolica. Fires matte. Apply clear glaze to intensify color or for use on dinnerware. Engobes will impact glaze results when used as a base. Engobes are used to change the color of your clay color surface without cross contamination and easy clean up in your studio. Can be used in oxidation or reduction firings. Results may vary. The choice of clay body, thickness of application, firing process, and temperature will greatly affect the fired results. Always test your application on your clay body in your kiln environment.
Cone 6 oxidation (larger image): Speckled Buff Engobe fires matte ivory with brown speckles. Engobes are used to coat your clay body to your preferred finish/color and are a great base to achieve v in your glaze results. Cone 10 reduction (smaller image): No change. Tips: Can be applied to wet clay, greenware or soft fired, cone 04 bisque. Engobes are often used for a variety of decorative techniques, such as sgraffito and majolica. Fires matte. Apply clear glaze to intensify color or for use on dinnerware. Engobes will impact glaze results when used as a base. Engobes are used to change the color of your clay color surface without cross contamination and easy clean up in your studio. Can be used in oxidation or reduction firings. Results may vary. The choice of clay body, thickness of application, firing process, and temperature will greatly affect the fired results. Always test your application on your clay body in your kiln environment.
Cone 6 oxidation (larger image): Brick Red Engobe fires matte red/brown. Engobes are used to coat your clay body to your preferred finish/color and are a great base to achieve v in your glaze results. Cone 10 reduction (smaller image): No change. Tips: Can be applied to wet clay, greenware or soft fired, cone 04 bisque. Engobes are often used for a variety of decorative techniques, such as sgraffito and majolica. Fires matte. Apply clear glaze to intensify color or for use on dinnerware. Engobes will impact glaze results when used as a base. Engobes are used to change the color of your clay color surface without cross contamination and easy clean up in your studio. Can be used in oxidation or reduction firings. Results may vary. The choice of clay body, thickness of application, firing process, and temperature will greatly affect the fired results. Always test your application on your clay body in your kiln environment.
Cone 6 oxidation (larger image): Dark Brown Engobe fires matte brown. Engobes are used to coat your clay body to your preferred finish/color and are a great base to achieve in your glaze results. Cone 10 reduction (smaller image): No change. Tips: Can be applied to wet clay, greenware or soft fired, cone 04 bisque. Engobes are often used for a variety of decorative techniques, such as sgraffito and majolica. Fires matte. Apply clear glaze to intensify color or for use on dinnerware. Engobes will impact glaze results when used as a base. Engobes are used to change the color of your clay color surface without cross contamination and easy clean up in your studio. Can be used in oxidation or reduction firings. Results may vary. The choice of clay body, thickness of application, firing process, and temperature will greatly affect the fired results. Always test your application on your clay body in your kiln environment.
Cone 6 oxidation (larger image): Black Engobe fires matte black. Engobes are used to coat your clay body to your preferred finish/color and are a great base to achieve in your glaze results. Cone 10 reduction (smaller image): No change. Tips: Can be applied to wet clay, greenware or soft fired, cone 04 bisque. Engobes are often used for a variety of decorative techniques, such as sgraffito and majolica. Fires matte. Apply clear glaze to intensify color or for use on dinnerware. Engobes will impact glaze results when used as a base. Engobes are used to change the color of your clay color surface without cross contamination and easy clean up in your studio. Can be used in oxidation or reduction firings. Results may vary. The choice of clay body, thickness of application, firing process, and temperature will greatly affect the fired results. Always test your application on your clay body in your kiln environment.
Composition and Reference Numbers for Mason Stain 6088 Dark Red COMPOSITION: Cd, Se, Si, Zr -- REFERENCE NUMBERS: 1, 3, 6 This Mason Stain was formerly known by this number: K5988
REFERENCE CHART 1 Can be used as a body stain at high temperatures. 1a Use as a body stain only. 2 Maximum temperature - 2156° F. 3 Maximum temperature - 2300° F. 4 Maximum temperature - 1976° F. 5 Do not use zinc in glaze. 6 May be used with or without zinc. 7 Zinc not necessary, but gives better results. 8 Best results with no zinc. 9 Glaze must contain 12% to 15% calcium carbonate. COMPOSITION CHART Al Aluminum oxide B Boric oxide Ca Calcium carbonate Cd Cadmium Co Cobalt oxide Cr Chromium oxide Fe Iron oxide Mn Manganese dioxide Ni Nickel oxide Pr Praseodymium oxide Sb Antimony oxide Si Silicon dioxide Sn Tin dioxide Ti Titanium oxide V Vanadium Zn Zinc oxide Zr Zirconium dioxide
Composition and Reference Numbers for Mason Stain 6021 Red COMPOSITION: Cd, Se, Si, Zr -- REFERENCE NUMBERS: 1, 3, 6 This Mason Stain was formerly known by this number: K5987
REFERENCE CHART 1 Can be used as a body stain at high temperatures. 1a Use as a body stain only. 2 Maximum temperature - 2156° F. 3 Maximum temperature - 2300° F. 4 Maximum temperature - 1976° F. 5 Do not use zinc in glaze. 6 May be used with or without zinc. 7 Zinc not necessary, but gives better results. 8 Best results with no zinc. 9 Glaze must contain 12% to 15% calcium carbonate. COMPOSITION CHART Al Aluminum oxide B Boric oxide Ca Calcium carbonate Cd Cadmium Co Cobalt oxide Cr Chromium oxide Fe Iron oxide Mn Manganese dioxide Ni Nickel oxide Pr Praseodymium oxide Sb Antimony oxide Si Silicon dioxide Sn Tin dioxide Ti Titanium oxide V Vanadium Zn Zinc oxide Zr Zirconium dioxide
