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To prevent clay from sticking to the table surface you can cover the
surface of the table (or use plywood boards )with a heavy cotton duck
canvas. You can purchase old white cotton bed sheets from a Goodwill or
Thiftshop which will basically do the same thing.
Newspaper sticks to the clay unless you change it regularly. Thick paper
garbage bags are handy for this task or a heavy duty Kraft paper which
comes in rolls.
When you use a clay body that is very dense slab work is often tricky.
Dense clay bodies require a slower drying time. Cover the clay with plastic
and/or with damp paper towels. If you are transferring the slab clay onto a
surface that does not absorb any water after you have finished the piece
this can present a drying problem. Newspaper, Kraft paper, butcher paper or
a thin absorbent cloth will alleviate this problem.
Slabs sometimes crack because of the stress of creating the slab. A way to
correct some slab stress is to roll the slab out first in one direction and
then roll it out again in the opposite direction.
Try mixing a little vinegar into the slip mixture. This may help the seams
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