Yes, use epoxy.
I have never heard of clay exploding unless your talking about the way clay explodes when its in a kiln for art purposes. In that case its not really the clay exploding, but the air bubbles inside of it becoming too great in pressure that the clay "pops" like a bubble letting the air out and leaving a mess.
It will be rock hard.
Pots can explode in the kiln due to several factors, primarily related to moisture and trapped air. If pottery is not properly dried before firing, moisture inside can turn to steam, causing pressure to build up and resulting in an explosion. Additionally, if air pockets are trapped within the clay during shaping, they can expand and lead to breakage. Using clay that is not suited for high firing temperatures can also contribute to this issue.
As far as I am aware, there is no such product that will be safe to use. Since air dried is not hard fired, there is no way to properly seal it enough to make it safe to wash. So even if you didn't scrape the coating, you could not wash it without it disintegrating in water. Clay will absorb water at an astounding rate if it is not kiln fired. Essentially the clay is baked until ALL water is removed and then it is coated with a silica paint. This paint will melt in a second firing to produce a glass coating which makes it safe to eat from. If you are still contemplating using the bowl you can have it kiln fired. Since the piece is air dried it is a simple process to get it fired. While you will probably lose your design, you can repaint it and glaze it and have a safe piece. Enjoy your bowl as a work of art because it is not advisable to use it as a kitchen utensil unless you have it kiln baked. See your local ceramics shop for further details.
Most glazes should be air dried. However if you are using a glaze on ceramics, it will dry when it is placed in the kiln to be fired.
Clay that is burnt is stronger than clay that has just been dried in the air.
Kiln dried wood is generally better than air dried wood for woodworking projects because it is more stable and less likely to warp or shrink.
To fix cracked or dried out air dry clay, you can try moistening it with water or a mixture of water and glue, then kneading it until it becomes pliable again. You can also try wrapping the clay in a damp cloth and letting it sit for a few hours to absorb moisture.
I have never heard of clay exploding unless your talking about the way clay explodes when its in a kiln for art purposes. In that case its not really the clay exploding, but the air bubbles inside of it becoming too great in pressure that the clay "pops" like a bubble letting the air out and leaving a mess.
Air dry or kiln depending on the clay type
Kiln-dried lumber is generally of higher quality than air-dried lumber because it is dried in a controlled environment, resulting in more consistent moisture content and reduced risk of warping or cracking.
Some types of air drying clay can be fired. A few air drying clays are normal water based clay bodies to which nylon fibres have been added (eg. Neclay and Potclays Creative Clay). These can be fired burning out the fibre in the process but bear in mind air pockets in the clay may cause the piece to explode in the kiln. Another alternative would be to make a mould from the air dried model and cast one or more permanent pieces from this mould either in resin or plaster of Paris. If you have a kiln it would be far safer to make a plaster of Paris mould from the air drying master and then slip cast hollow clay copies in a clay slip that you have the firing data for.
It will be rock hard.
you make it out of clay and put it in a kiln or let it air dry. good luck :)
Air dry clay can crack easily if it is not handled or dried properly.
you make it out of clay and put it in a kiln or let it air dry. good luck :)
Kiln dried lumber offers several benefits for woodworking projects. It is less likely to warp, shrink, or crack compared to air-dried lumber, making it more stable and easier to work with. Kiln drying also helps to remove excess moisture, reducing the risk of mold and insect infestation. Additionally, kiln dried lumber tends to have a more consistent moisture content, resulting in a higher quality finished product.