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Friday, September 24, 2010

Pottery class- Week 2 practice (bowls)

Hi folks,

For your two-hour practice session this week, throw at least eight bowls and keep 2:
  • Wedge your clay
  • Weigh out 4 pounds of wedged clay, and knead it;
  • Divide the kneaded ball of clay into 4 equal-size pieces;
  • Throw 1-pound piece one into a bowl;
  • When you've thrown all 4 pieces, decide which one to keep and set it aside;
  • Wedge the pieces ones back up with the rest of your clay;
  • repeat one more time.

Tips: Drying and finishing your pots

  • cut the piece off as soon as the water has dried from the surface of the bat
  • Let piece stiffen on the bat
  • As soon as the piece is stiff enough to handle without distortion, flip it over so the bottom can dry
  • Dry slowly; wrap in plastic to keep moist (newspaper square top and bottom)
  • Remember to label your piece with your name and the date while it's on the shelf
  • When piece is leatherhard (about the hardness of cheddar cheese)
    • Clean up the bottom edge with a metal rib
    • Roll the bottom edge on a smooth surface
    • Write your name and the date on the bottom
    • Clean up rough spots with a metal rib and a damp sponge
    • Put the piece on the "to bisque" shelf for bisque firing

The leatherhard stage is also the best time to apply slip decoration:

Simon leach slip decoration video

    Next class we'll talk about:
    • glazing and decorating
    • mugs
    • softening clay
    • reclaiming clay
    Cheers!
    Jay