When clay dries, it shrinks. How much? About 6 % from wet to bone dry. Then about 6% more from bone dry to a final firing at cone 10. So 12% would be the average, but it varies from about 10% to 14% depending on your clay body and how it was thrown or rolled out.
With the Shrink Rule and a little experience, you can size and plan for shrinkage when creating your wares. Get the results you want!
Comes with 6%, 10% 12% and 14% rules all on one tool. Flexible, moisture tolerant, cleans easy.