Jump to content
Sign in to follow this  
mrcasey

Mathematical Definition of "Centered"

Recommended Posts

 

What is a good definition of centered clay? (I'm especially curious about Tyler's and Baymore's  opinions)

(1)  What is the mathematical/physical definition of a centered piece of clay? and
(2)  Why does coning up and down center a piece of clay?  

 

 

Share this post


Link to post
Share on other sites

I've no answer to your question, but it's interesting to discover that people 'out there' (i.e. non-practitioners) do find this sort of thing interesting...

Regulating rotation speed in wheel throwing: Effects of mass and shape

...to one side, but relevant, from the Journal of Archaeological Science:

A proxy of potters’ throwing skill: ceramic vessels considered in terms of mechanical stress - (PDF)

Share this post


Link to post
Share on other sites

For me, centering is to coax the clay into a shape that is equidistant from the rotational center of the wheel head.

As for coning, it is a wheel throwing wedging technique that helps to align platelets and remove air bubbles from the clay. The technique of raising the clay then pushing it down achieves this, and at the same time the gradual movement of the form outward from the center helps to center the clay. Many texts have called this coning "Mastering" as a preliminary step to wedging. For the beginner, being able to cone up and down, is a skill process as it helps to understand the amount of pressure, water lubrication and coordination needed to get the clay to move for the potter.

All of this is in my understanding, and I am sure others may elucidate much better than I.

best,

Pres

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×