Hello to everyone ! My name is Penny. I've been throwing for a number of years and changed to stoneware about a year ago. I decided to invest big time and bought a ton of ingredients to make my own glazes. I've made progress and have some good results starting to happen. Actually.. That was until about 3 weeks ago. It started with a pot with a few bubble craters. Over the next few firings, it's getting worse. It's with all of the glazes in this last kiln load. They all have bubbles and now on top of that, I'm getting a strange texture across most of the pots. It's almost like someone blew something over the pots. If the pot was covered, the inside was fine.
I fire to cone 5 with orton cones. (Not rich enough for a fancy dancy kiln. ) I'm using Sybil clay with speckles. All of my glazes have worked on previous firings. ...but this is my first kiln load of everything being altered with additional glazes. Basically... Why am I getting more and more bubbles and craters? Why did the entire kiln load get this weird surface texture?
I'm enclosing photos of 3 samples. Thank you! Thank you! Thank you !,,,!