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PINCHED BURNISHED BIRD

PINCHED BURNISHED BIRD. Working with simplified form. Studio Procedures. Lockers Available on a first come first served basis. Sign up with a partner. Check locker first. Clay is available for purchase. X. Recycle= $3.50 Earthenware = $6.50 Stoneware = $6.50 Porcelain - $7.50.

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PINCHED BURNISHED BIRD

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  1. PINCHED BURNISHED BIRD

  2. Working with simplified form.

  3. Studio Procedures

  4. LockersAvailable on a first come first served basis.Sign up with a partner. Check locker first.

  5. Clay is available for purchase. X Recycle= $3.50 Earthenware = $6.50 Stoneware = $6.50 Porcelain - $7.50

  6. We use one cone 6 terracotta and everything else is cone 10.NO LOWFIRECLAY

  7. Getting Started With Clay

  8. What is clay? How is it different than just dirt?

  9. Al2O3 2SiO2 2H2O

  10. Clay Origins

  11. Clayis decomposed granite.The closer to the source, the purer the clay. Kaolin, the main ingredient of porcelain is the purest known clay. Earthenware has the lowest melting point, it has journeyed the furthest.

  12. Plasticity – the property of being able to be molded and retain shape,slippery Shrinkage – cracks as it shrinks Refractory – resists melting, resists acid Transforms – heat chemicals changes into permanent shape Plasticity – Ball clays most plastic Shrinkage – Grog, sand or temper is added to reduce shrinkage & cracking Refractory – many earthenwares will melt Transformation – clay becomes permanent around 1000deg during bisque (porous) Clay Properties

  13. Categories of Clay Bodies • Earthenware – low fire, porous, grey-red terracotta (cone 6) • Stoneware – mid to high fire, many colors buff, b-mix, stout, 612, S. Barbara • Porcelain – most refractory, resistant to acid, whitest (colors look best on) glacia, pier, coleman

  14. The difference between stoneware, porcelain, earthenware. Temperature (melting point) Texture (grog, sand) Ingredients (flux, temper, colorant) Color • Which is which: Glacia, B-Mix, Buff,Terracotta, Stout…

  15. Safety Reminders • Wear appropriate clothing • Minimize toxic exposure • Use gloves or stir sticks • Dust is the enemy. • Use a mask • Work in a well ventilated area (outside) • Minimize (sand on paper, toss whole thing) • Wet sponge as often as possible

  16. Techniques for successful throwing. • 1) Clay prep • A) Moisture – not too wet, not too dry • B) Wedging – even distribution of particles • 2) Centering • 3) Appropriate speed control • 4) Knowing what shape you want • 5) Finishing piece in timely fashion

  17. What is a pyrometric cone?Rank coolest to hottest -- 6, 06, 10, 04At what cone do we:bisquemid-rangerakuhigh-fire?

  18. 2) Creating Form and Surface • Form is the shape of an object, including its internal space, surrounding space and negative space. Negative space is the space between solid shapes. • The subject of the form may be abstract, realistic, functional/utilitarian, non-functional, vessel or sculpture. • Surface treatments include texture, oxide, slip designs, and glaze/no glaze.

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