Transcript CERAMICS - Pearl Quick

CERAMICS
CLAY TILES
in
Bas Relief
CLAY
 Mud; moist, sticky dirt.
 In ceramics, clay is finegrained,firm earthy material that is
plastic when wet, brittle when dry,
and very hard when heated.
The most common types of
ceramic clays are:
 earthenware,
 stoneware, and
 porcelain.
Earthenware
 Earthenware is a low-fire clay that
is porous and not waterproof.
 It can be made waterproof by
glazing it.
 You will use earthenware clay to
carve a ceramic tile using your
name or initial.
Leather-hard
Your clay tile must dry slightly before
you carve into it.
This stage of drying is called leatherhard. There is still moisture in the
clay, but it is just dry enough to hold
its shape and not “slump”
Clay Slab
 First plan on newsprint.
 Begin by drawing a frame around
the edge of the paper.
 Draw the letter large within the
frame.
 Keep it simple. You will be able to
add texture later for interest.
Clay Slab
 You will be given a 1/2 inch thick
clay slab, and a template. Use a
clay tool and the tile template to cut
your slab tile 6 inches square.
Clay Slab
 Be careful when handling the clay
slab.
 Clay has a memory, so keep it flat.
This helps the “warp factor” when it
is time to air dry the tile.
Clay Tile
 Use a tool to draw your design
LIGHTLY into the leather-hard clay
tile. Begin with a frame around the
outside edge. Draw your letter large
within this frame.
Bas Relief sculpture
 With a tool, begin carving out the
negative space. The remaining
positive space projects from the
background.
 This type of carving is called bas
relief sculpture.
Bas Relief Sculpture
 Bas relief is a French term meaning
"low-raised work." This art, along
with high relief, is known
collectively as relief sculpture - This sculpture is meant to be seen
primarily from one direction -- as
opposed to sculpture which is in the
round
Bas Relief sculpture
Texture
 When finished, decide where you
want to add texture.
 You may use the small texturing
object in the baskets on the
counter.
 The texture adds interest to your
simple design.
Bone Dry
 When finished, your greenware
tile needs to be thoroughly dry
before it can be fired.
 This stage of drying is called
bone dry.
Greenware - Bisque
Unfired clay
Is called
Greenware
 Fired clay is
called
bisqueware.
Firing
 Clay is hardened by heating it to a
high temperature, thus fusing the
clay particles. Temperature in kilns
can reach 2500 degrees.
Glaze
 The bisque clay tile is now ready to
be glazed.
 Glaze is a coating of material
applied to ceramics that forms a
glass-like surface when fired a
second time.