What is Clay Clay is a special type of MUD Clay is a natural occurring substance found in the earth Clay is made of very fine particles of dirt which float in a stream or river and then sink to the bottom where they press on each other and stick together You generally find cl ID: 589482
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Slide1
What is Clay?Slide2
What is Clay?
Clay is a special type of MUD
Clay is a natural occurring substance found in the earth.
Clay is made of very fine particles of dirt which float in a stream or river and then sink to the bottom, where they press on each other and stick together. You generally find clay along the banks of a river or stream.
These cliffs in
Martha's Vineyard
are made almost entirely of clay.Slide3
To make clay stick together when it dries you have to score and slip the clay
Clay is sticky when it is wet, so you can make it any shape you like, and then it dries hard. Slide4
To attach 2 pieces of clay together you have to:
Score – an X mark on the claySlip – adding water to clay
(only add a little bit of water so that the clay
doesn’t turn into a muddy mess!)Slide5
3 methods of clay construction
Slab – clay is rolled out into a flat slab, like a pancake, and then cut into shapes.
Pinch
– clay can be pinched into shapes and this is usually done with pots.
Coil – clay can be rolled out by hand into a coil or snake Slide6
How does Clay become hard?
When the clay is dry you put it in a fire, or in an oven (a clay oven is called a kiln) and bake it for a while, the clay gets even harder and it will not get soft again. This is called firing.
Kiln –
a special oven for clayThe kiln gets very hot
and fires the clay at 2,000 to 5,000 degrees.How hot does the oven for food in your house get?
Slide7
Glaze
Once clay is fired in a kiln it turns hard like a stone and can not get soft again. Clay is often painted or glazed for decoration.
Glaze
– is a special glass paint that is used on clay to create a shiny and waterproof coating.
Glaze is made out of water, pigment (color), and sand.What is glass made out of?Slide8
2nd Firing Bisque wear to
Glaze wearOnce the clay is painted with glaze it must be fired in the kiln again to melt the sand in the paint to create the glass coatingSlide9
What do you use every day that is made out of clay in the bathroom?Slide10
What do you use in the kitchen that is made out of clay?Slide11
Clay and Ancient Times
People first began firing fire clay about 6000 BC
.
People in the ancient world used clay to
build houses by making bricks and drying them in the sun. They mixed straw with the clay to help it stick together better. This is called
mud-brick, or adobe (ah-DOUGH-bee), or pise (pea-SAY). They fired the bricks, to make them harder and more waterproof.Slide12
Clay and Ancient Times
This is the world’s largest adobe structure made out of mud bricks.
The
citadel
of
Arg-é Bam
: The world's largest
adobe
structure, dating to at least 500
BC
. Located in southeastern
Iran
.Slide13
Clay houses in the US today
are made of bricksSlide14
Portraitsbefore photography statues
were often used to remember people Slide15
China is a famous world leader throughout history for their ceramic production
Porcelain Terra Cotta Warriors Slide16
Clay Vessels from Greece and Rome
are often found in Art Museums like
The Tampa Museum of ArtSlide17
Modern Ceramic Art
ModernSlide18
More Things Made From Clay
ModernSlide19
Recommended Slab Based Ceramics projects
K – 6 Initial Tile
(easy)
2-12
th
G
Plates & Bowls
(easy)Slide20
Intermediate level Slab based Projects
3 – 12th G Totem Pole
School
g
arden installation sculptureSlide21
Intermediate to Advanced
level Slab based Projects
5 – 12
th
G Castle
6 – 12th
G Soap DishSlide22
Clay Soap Dish
Design a soap dish to hold a bar of soap
The dish should be about the size of your hand or larger with raised feet and drainage holes or grooves for excess waterSlide23
Soap Dish ExamplesSlide24
Clay Castle Project
1) Draw a castle on paper to scale. Each side of the castle will be a separate piece2) Cut out and tape the model castle together to make sure it is correct.
3) Open the paper model and cut out each piece in a clay slab to match the paper exactly
4) Construct the castle out of clay using coils to connect the slabs at the cornersSlide25
Clay Castle Design Options1) Tower - circular
2) Block - squareSlide26
Clay Pinch Pot
1) roll a circle 2) insert your thumb3) pinch it open with your thumb insideMake sure your fingers are flat and that you pinch the entire pot evenly bottom to topSlide27Slide28Slide29