Leather hard clay or moist clay does not slake well because it is not porous like dry clay is.
How to harden ceramic.
There is no need to break up dry clay.
This will ensure that the piece is symmetrical over the base.
Part time at a foundation that produces clay for ceramic artists.
If you mean what normal potters mean by ceramics then th.
It s an absolute chore to have to sharpen something that s harder than bone and steel thus requiring you patience and elbow grease as well as diamond sharpeners to ensure you re.
But i believe all of them use heat to create crystal structures.
I actually make the clay that i and others nationwide use.
The trouble with sharpening ceramic knives isn t that it s impossible to do it s instead quite difficult to accomplish.
If your clay seems hard continue kneading it until it is soft and pliable.
Ceramic is hard yet brittle so brace yourself.
To reprocess hard clay it must first be totally dry.
Be sure it has no plaster chips in it plaster causes pop outs when bisque fired.
If you mean advanced materials science technical ceramics like for superconductors or space ships i am not sure.
Can the same or similar process be used to harden stress the surface of ceramic materials like alumina or sic.
Are there other ways to harden the clay that will make it as hard or nearly as hard as a kiln would.