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Links to sculpture & pottery websitesPlus a simple pottery lesson
Contemporary art from British Artists
Buy, lease or rent contemporary paintings & sculptures from Scotland Art.com
http://www.scotlandart.com
![]() Clay Lesson Pottery--From Mud to Marvelous
All that is needed to work in clay is the clay, glazes, a few tools and some
sort of firing apparatus. Everything you need can be found at your local art
supply store. Clay is formulated from earth components and minerals to create a "plastic"
material that is easy to form and will stand up to the drying and firing
processes. Basically, there are three types or categories of clay: low-, medium-
and high-fire, each requiring specific firing temperatures and glazes. Low-fire clay requires the lowest firing temperatures, around 1500 degrees to
1800 degrees, to achieve rock-hard permanency. Low-fire clays come in a variety
of colors, including white, off white, red and browns. It has the least
resilience to abuse, but can be used very successfully for all aspects of clay
work: functional, decorative and sculptural. Earthenware is the clay in the middle firing range. The temperature required
to fire it to permanency is around 2000 degrees. Minerals and additives to this
clay usually create gentle earth tones when fired to a maturing temperature.
Reds, browns, speckled or smooth, earthenware is the most popular type of clay,
especially among beginners and intermediate potters. The consistency of the
material makes it easy to form, either in hand work or wheel throwing. It
usually yields a smooth surface with little or no pebbling or grit to show
through the glaze. Porcelain is often referred to as high-fire clay. It requires the highest
firing range, around 2600 degrees. At that temperature, thin areas on forms
(such as edges) begin to turn translucent. One well-known and revered
characteristic of porcelain is its smooth, near-velvety feel. It is, however,
this very smoothness (very fine grog or none at all) that makes it the most
challenging clay to work with. But, the fired surface is unparalleled in quality
and elegance. Shaping the clay can be done on a potter's wheel or by hand. Many collectors
consider a work done without the aid of a wheel to be more "aesthetic" and
organic; and many artisans feel the same way and never opt for a wheel. There is
a huge selection of hand tools to assist the artist in shaping, joining,
texturing or otherwise manipulating the material. Glazes for clay are the area where the craftsman and the professional
potter/ceramicist take two different roads. The hobby potter will most likely
buy his glazes in premixed batches, by the pint or in a smaller quantity. The
professional will formulate special glazes to fit the clay and structure of his
work. Despite the quantity difference, the glazes function in exactly the same
way. By buying a pre-mixed glaze in a specific firing range, you are guaranteed
a good fit to the clay, a smooth surface and a wonderfully luscious look to the
finished piece. Following the instructions as to application is essential--usually multiple
coats brushed on to achieve a uniform thickness. Professionals create glazes in
quantities large enough to dip their work, thus speeding the process; but,
again, the results are very similar. Surface decoration of pieces is possible in a number of ways. Underglaze
pencils and crayons can be used to hand draw images that will show through a
clear glaze. Overglaze chemicals can be purchased or simple metallic oxides can
be combined with water to add instant and intense color on top of a glaze.
During firing, the fluid glaze absorbs the colorants to make the drawings a
permanent part of the surface. Carving a clay form when it is in the "leather hard" stage of drying is
another way to create great visual and tactile texture. Glazed or simply carved
and fired, the unique and slightly three-dimensional look is very appealing. The purchase of a kiln gives you more flexibility and the ability to work on
a grand scale. Kiln firing chambers range from small jewelry kilns for small
projects to very large-capacity models. The most expedient way to "get firing"
is with a small counter-top model that can be used on a regular 220-volt
household circuit. Larger models necessitate heavier wiring and pull higher
amperage. Extra wiring may be needed to facilitate a kiln large enough for large
pieces. Amazing things can be done by developing decorative items that can be joined
after firing, making it possible to use a small firing chamber to create larger
finished pieces. Stacking or the use of epoxy to "weld" components together are
but a couple of the techniques used by potters and ceramists who do not have a
large kiln. Perhaps, initially, you might opt for another plan. The joy of working with clay is well worth the investment in materials, but
if the kiln represents a snag in your plan or if you live in a small apartment,
don't despair. Kiln firing is often done at neighborhood craft centers or
ceramic shops. These shops usually fire your work with others and charge by the
piece, allowing you to do projects in a timely manner. Make some calls, take a
class and get dirty!
Contemporary art from British Artists
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