How to Determine Clay Shrinkage and Make a Clay Shrinkage Ruler | STEPHANI STEPHENSON

This clip is excerpted from Studio Scale Architectural Ceramics, which is available in the Ceramic Arts Network Shop: mycan.ceramica...

[@pahu47]

Thanks ! I'm a visual person, and the shrink rule works for my brain. Your Mileage May Vary !

[@davewalwark]

May I suggest simplifying the equations presented midway?
Let's use a definition like this: shrinkage = finalSize/initialSize. Here, shrinkage = 0.92. To make into an 'enlargement factor' just take the reciprocal: 1/0.92 = 1.0870.
In summary: designSize/shrinkage = buildSize.

[@lynnustan3042]

The presented formula confused me too. It clearly shrunk by 8%.

[@s.s.9732]

yes! our brains work in different ways. It's always good to see a variety of ways, to find what works for you!

[@joannedevilliers6448]

Very helpful. Thank you.

[@s.s.9732]

glad the information was useful for you, Joanne!

[@Arhmt9Playlist]

Does the shrinkage rate change within the same clay body depending on the batch? For example, I bought a clay body from Laguna clay and it has a shrinkate rate of 10% +/- 2%. After using the clay, I discovered it has a shrinkage rate of 12%. If I buy a new bag of this same clay body from Laguna, will it always have a 12% shrinkage rate or could the next bag have a 8% shrinkage rate? Thank you so much for all your lovely videos.