These are all test rings that I've been putting through the motions. I'm currently testing the durability with different clay types and mixes, as well as a new sealer.
All but the piebald have broken on the stress tests, where I squish and pull them all around. The piebald's mix is promising, it has handled every test beautifully. Though the sealer turned sticky after being hit with aerosol, so it's in the graveyard with the rest.

It hurts every time they break, haha. But necessary for science!