Glazing Basics

Glaze is made from Silica which melts to form glass, and a Flux which allows the Silica to melt at lower temperatures. The proportion of these ingredients, plus colorants and firing of the kiln affect the color and opacity of the glaze.

1. Prepare: Record a description of pottery and glaze technique in a notebook. Wipe bisque ware with a clean, damp cloth to remove dust. Avoid sanding - Clay dust can be harmful.

2. Wax foot, if desired. Wax resist is a liquid wax emulsion used to keep the foot and lid rim free of glaze. Also used over glazes for decoration.

3. Stir glaze. Glaze is a suspension and settles. Keep glaze stirred.

4. Application: Glaze the inside of the pot first. Apply glaze evenly, avoiding drips.

Methods:

a) Dip piece quickly, the longer in the glaze the thicker the application.

b) Brush or sponge 2-3 coats evenly. Do not dry brush.

c) Pour glaze from a cup over the piece. Avoid overlapping thickly.

5. Overglaze: For interesting, decorative effects: Clean foot first.

Brush or sponge - use quick strokes, do not allow brush to drag

Pour- Holding pot, quickly pass under stream of glaze.

Dip - hold pot by foot, dip rim. Do not dip more than halfway - glaze will run in kiln firing.

6. Clean Foot: Scrape excess glaze from foot, wipe across sponge mat.

7. Check pottery carefully for even coverage, drips, etc. Make sure foot is clean.

Remember:

• Clay dust is harmful to breathe! Avoid creating dust.
• Keep a notebook to record glazes, glaze combinations, and ideas.
• Do not double dip!
• Keep glaze stirred. Do not shake small jars, stir them.
• Never eat or drink when glazing.