Plastic Leather hard Bone dry Bisque Glaze Greenware Glazeware PlasticWorking Clay Clay that is in a workable form It can be formed and retain its shape ID: 531500
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Slide1
Stages of clay
Plastic Leather hard Bone dryBisqueGlaze
GreenwareGlazewareSlide2
Plastic/Working Clay
– Clay that is in a workable form. It can be formed and retain its shape. Slide3
Leather Hard
– The stage where the clay is soft enough
to carve or cut yet hard enough to stand on its own or support itself. Two pieces can be joined together.(Slip and Score) Slide4
Bone Dry
–This is the most fragile stage of clay. All or most of the water has evaporated .It looks and feels dry. – no cold to touchSlide5
Greenware
– Unfired pottery; still being cleaned or sanded. Clay is fragile at this stage, but not as fragile as bone dry.
Greenware – Unfired pottery; still being cleaned or sanded. Clay is fragile at this stage, but not
as fragile as bone dry.Slide6
Bisqueware
– Unglazed clay that has gone through theFirst Firing!!By bisque firing, the clay
becomes stronger. Slide7
Glazeware
– Pottery that has been coated with a glaze and refiredSlide8
How do you join to pieces of clay?
Slip/Liquid Clay – Score-Clay + water = Slip Cross HatchingUsed as a glue Marks made where
to join clay. Clay will touch
Clay Construction – Slip and ScoreSlide9
Clay Maintenance – Wedging
remove air bubbles, achieve uniform consistency, and to line up the particles of claySlide10
Additive – When you add material to a sculpture to build up the form
Subtractive- When you subtract material from the sculpture to build up the formSlide11
Main construction methods
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Pinch- made with the pinching of fingers and thumb .Coil- gently rolling clay back and forth to create coils and using those coils to build up a form. This process is great for large asymmetrical forms.Slab- Using a slab roller or guide sticks to form slabs and cut and join with other stiffened slabs to create the form. Best for tall straight cylindersSlide12
Pinch PotsSlide13
Coil PotsSlide14
Slab PotsSlide15
Kiln
- Furnace in which Clay is firedThe First firing of a clay object is called the Bisque firing.The second Firing of a clay object is called the Glaze firing. Slide16
Glaze- Liquid suspension of material that melts in the kiln and produces a glasslike surface provides Beauty, Strength, and Waterproofs the piece
Brushed on at the Bisque stage Slide17
Glaze Before kiln----- -------After Kiln