•The secret to cool bodies and glazes is alot of testing.
•The secret to know what to test is material and chemistry knowledge.
•The secret to learning from testing is documentation.
•The place to test, do the chemistry and document is an account at https://insight-live.com
•The place to get the knowledge is https://digitalfire.com
Throwing rings, throwing spiral
A technique of throwing where the final stage is to put a quick spiral in the piece. This is often done to give it a hand-made look (difficult to reproduce in a machine) and to add more interest to the profile.
Tenmoku mug with throwing rings.
By Tony Hansen