I am glad that you have cleared up the myth of the air bubble. Every ceramic instructor will tell students to poke a hole in the vessel. I figured it out myself after about 40 community ceramic classes. The instructor is afraid that the student will leave a non bone dry piece on the bisque shelf. So, the general rule is "poke a hole in it".
It's definitely good advice to poke a hole in it, especially with student work. But then it's also good to know that you technically don't have to, if enough care is given to the drying process.
I was thinking if someone could invent/create/etc. a ceramic coffee cup that had air enclosed w/i so that it would be insulated it would be a money maker. Hope to either find one or give someone the idea to "make it so".
Had two events of steam expansion raku firing with bisque pots. The pot was glazed and put into the raku kiln without enough time to dry... That pot explode into a pile of rubble.
I am glad that you have cleared up the myth of the air bubble. Every ceramic instructor will tell students to poke a hole in the vessel. I figured it out myself after about 40 community ceramic classes. The instructor is afraid that the student will leave a non bone dry piece on the bisque shelf. So, the general rule is "poke a hole in it".
It's definitely good advice to poke a hole in it, especially with student work. But then it's also good to know that you technically don't have to, if enough care is given to the drying process.
I was thinking if someone could invent/create/etc. a ceramic coffee cup that had air enclosed w/i so that it would be insulated it would be a money maker. Hope to either find one or give someone the idea to "make it so".
Not on air bubbles but can your clay piece be too dry to kiln fire? Like 2 months old bone dry clay pieces?
No, it can't be too dry. The dry-er the better.
@@suemcleodceramics thank you
Had two events of steam expansion raku firing with bisque pots.
The pot was glazed and put into the raku kiln without enough time to dry...
That pot explode into a pile of rubble.
Oh no! Definitely the worst kind of explosion, when there's glaze on the pots.
completely agree
From michigan
What issues does an air bubble cause in drying
Small air bubbles don't really cause any issues. Large pockets of air, especially in large/thick pieces can slow down drying.