1. GLAZINGCeramic and Earthenware

2. Henry Moore Glazing Steps • Keep bisqueware clean – keep hands clean when glazing • Remove all dust from bisqueware before glazing • Keep glaze mixed well • Apply 2-3 coats of glaze • Allow each coat to completely dry before applying next coat • DO NOT glaze the bottom (area touching table) • Gloss Glazes: • Apply 2-3 coats – will be glossy • Underglazes: • Apply 2-3 coats – will not be glossy • Apply 2-3 coats of CLEAR gloss glaze on top of underglaze to make it glossy

3. 4 Types of Glazing

4. Dipping, Pouring & Spraying • Dip entire piece into glaze • Only 1 coating (1 dip) • Self-levels • Our Hi-fire glazes are dip • Wax the bottom to prevent glazing • Glaze must be mixed well • Use tongs to dip • Cover tong marks with paintbrush & same glaze

5. Brush Glazing • Wet the bristles of the paintbrush • Mix glaze well • Brush on glaze in 2-3 coats with a paintbrush • Use soft bristle paintbrush • Be sure glaze is on the brush • Never leave brush in the glaze bottle

6. Gloss Glazes • Glaze is a layer of GLASS on your pottery • Read LABEL to be sure you have the desired color • Shake well with your hand on the lid • 2-3 Coats • Will be glossy when fired • Has some transparency • High areas lighter in color • Deep and textured areas pool glaze and look darker • “moves” like glaze

7. Before & After Firing • Three coats – let each layer dry in between • Will be chalky when dry • Glaze will change in the kiln – becomes brighter and glossy • Underglaze is not shiny unless clear gloss coated

8. Gloss Glazes • “Move” and drip like glaze

9. Gloss Glazes • More likely to drip If :: • Too thick • Overlaps with other glaze

10. Gloss Glazes – TransparencyAlways check the samples & labels • Transparent Gloss Glazes • Most glosses have some transparency • High areas lighter in color • Deep and textured areas pool glaze and look darker • Opaque Gloss Glaze • Opaque glazes cover evenly – no transparency • Be sure to have amed-high relief texture for interest • Both are good for highly detailed carvings

11. Gloss GlazesCrystaltex and Special Glazes • Crystaltex Glazes • Gloss glaze with small elements that burst when fired and add color specks • Mix well – chunks settle to bottom of jar • Special Glazes • Textured • Matte • Crackle

12. Gloss GlazesCrystaltex and Special Glazes • Good for non-detailed, smooth and all-over surfaces • Not good for detailed surfaces – may cover up intended design

13. Underglazes • Small bottles • 2-3 coats • Will NOT be glossy when fired • Is opaque if enough coats are applied • Must have clear gloss glaze applied if glossiness is desired • 2-3 coats of clear in addition to underglaze

14. Underglazes • Will not drip – stays where it is painted • Great for :: • Details • Shading • Lettering

15. Underglazes • Clear glaze MUST be applied to make the glaze glossy • It will cover the entire piece with the clear glaze color – ours is pink

16. Underglazes • Can overlap dark colors over light colors • Needs 2-3 coats of each color even when overlapping

17. Glazing Tips

18. Paper Stencil • Draw/print design on paper and cut out • Lay directly on clay to trace, or glaze over

19. Light Pencil Drawing • Draw design lightly in pencil on piece – graphite will fire away in kiln

20. Glazing Defects

21. Glazing Defects • Crazing • Most common glaze defect • Occurs when glaze cools too fast, or glaze does not fit clay body • “pinging” • Crackle Glaze • sought after

22. Glazing Defects • Pin holing • Small dots of unglazed areas • Occurs when gasses in the glaze bubble to the surface, pop bubbles and do not heal over • Remedy • Wipe off dust before glazing • Allow glaze to dry completely

23. Glazing Defects • Blistering • Glaze bubbles like lava on the surface • Occurs when gasses in the glaze bubble to the surface, but do not pop • Remedy • Wipe off dust before glazing • Allow glaze to dry completely

24. Glazing Defects • Crawling • Glaze pulls together and forms separate droplets on surface • Occurs when there is bad adhesion to the bisque • Remedy • Be sure bisqueware is clean • Do not apply to burnished surfaces

25. Glazing Defects • Shiver • Glaze pulls away from the surface and cracks off • Occurs when glaze doesn’tshrink as much as the clay • Remedy • Be sure bisqueware is clean

26. Henry Moore Glazing Steps • Keep bisqueware clean – keep hands clean when glazing • Remove all dust from bisqueware before glazing • Keep glaze mixed well • Apply 2-3 coats of glaze • Allow each coat to completely dry before applying next coat • DO NOT glaze the bottom (area touching table) • Gloss Glazes: • Apply 2-3 coats – will be glossy • Underglazes: • Apply 2-3 coats – will not be glossy • Apply 2-3 coats of CLEAR gloss glaze on top of underglaze to make it glossy