Transactions of the INDIAN CERAMIC SOCIETY Vol. 08 1949
ESSENTIAL CONTROLS IN WHITEW ARE INDUSTRY
D. S. JAGANNADHA RAo AND M. L. V ASDEV.
Pages : 39-46
DOI : 10.1080/0371750X.1949.10877864
Abstract
There is an old saying amongst Master-Potters that clay
has a very long memory. It remembers all that has been done
to it during the various stages of manufacture, particularly
the harsh treatments, and it very strongly hits back in its reactions.
For example any whiteware body that has been dried too
rapidly will crac~ ; should this crack be patched up and ~pparendly
covered in the bone-dry state, it is ntore often than not likely
to show up after firing. Or should any plate be jiggered and
the amount of water be allowed to fall below the requisite limit,
when the profile is liable to jump and again ~ore water us~d
to smoothen the surface of the plate, it results in an apparently
well finished plate, but such a plate is found invariably to come
out of the oven warped. Many other instances could be quoted
of a parallel nature. But these two would serve for the time
being to illuotratc the point under reference.