Different parts of a piece may require different treatment so that the entire piece dries evenly.

Sometimes, when I’m really on a roll in the studio, I find it difficult to be patient and let the work dictate the pace of the process. If it’s not ready to be trimmed, and I go ahead and trim it while it’s too soft, I pay the price in deformation or S-cracks after firing (from not compressing during trimming). The same can be true with drying. Rushing the process is almost never good. Luckily, it’s not difficult to dry your work evenly—assuming you can make yourself leave it alone. In today’s feature, Snail Scott walks us through the basics of drying and some simple ways to ensure success. — Sherman Hall, Ceramic Arts Daily





The drying process is, in many ways, more stressful to clay than the firing process. Uneven drying can lead to separation at small joints, and warped or cracked edges. While some clay bodies and forms are more vulnerable than others to these stresses, ensuring an even drying process before firing is always helpful.

Plastic Power
I’ve often thought that the greatest innovation in modern ceramics is
not the electric kiln or powered wheel, but plastic. On pieces that
take a long time to dry, a simple plastic cover assures both gradual
drying and protection from uneven drying produced by exposure to
drafts. But moisture from drying clay does have a tendency to condense
inside the top of plastic coverings, often over-wetting delicate rims
and details. It’s a good idea to place a layer of rags or paper towels
between the clay and its plastic cover to trap condensation. Replacing
these wet linings with dry ones regularly permits gradual drying and
prevents exposure to drafts that cause uneven drying.

For
pieces that tolerate faster drying, you can omit the plastic entirely.
Just make a “tent” of fabric or newsprint to keep out the unwelcome
drafts and allow moisture to escape gradually.



Download the Ceramic Workshop Handbook now to get more great tips and ideas! From making your own clay tools to learning about raw materials and kiln firing, you’ll want to keep this one handy.


Some
ware made from forgiving clay bodies can often dry in the open air, if
there aren’t any drafts to cause uneven drying or thin projections such
as handles. These tend to dry first, since they are exposed to airflow
on all sides. Long handles or similar structures with two points of
attachment are especially vulnerable, since the clay at the two
attachment points may dry at different rates, creating tension. This
tension can lead to breakage either at the joint or on the handle
itself. For these vulnerable pieces, wrap the fragile part in a scrap
of plastic to slow its drying rate to match that of the rest of the
piece. Or apply wax resist to these areas for a similar result, if you
don’t mind the extra expense, production time and unwanted fumes during
the bisque firing.

On Edges
Thinner and completely surrounded by air, edges are another vulnerable
area where fast or uneven drying can cause warping and cracking. To
protect thin edges, tear up plastic strips and place them on the rims
of still-damp pots, slowing the drying process. Pottery with level rims
can also be inverted to rest on its rim, effectively turning the whole
piece into an edgeless closed form, though this can be hazardous for
very delicate or not-quite-level rims.

Nothing
is more frustrating than throwing your first bowl or forming your first
teapot, only to see it break or warp during drying. It’s worth your
time and trouble to protect your work while it dries to insure your
pottery making success.

So, remember:


1. When drying pots, place a plastic cover over your pots.

2. Uneven drying causes tension that can crack handles and rims.

3. Dry pots upside down to even out the drying process.

4. Wrap handles and rims with plastic to help equalize drying.



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