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.
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.
if you are using recycled clay, wedge the clay on a solid surface, use your cutter, and cut in half, if you see any wavy lines in it, it needs more wedging. if you are using new clay you should not have to wedge but use it, making sure as when you are building that you do not leave air pockets in the piece work, otherwise it can explode in the kiln, worst case scenario
Clay that is burnt is stronger than clay that has just been dried in the air.
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
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.
you make it out of clay and put it in a kiln or let it air dry. good luck :)
It will be rock hard.
you make it out of clay and put it in a kiln or let it air dry. good luck :)
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.
if you are using recycled clay, wedge the clay on a solid surface, use your cutter, and cut in half, if you see any wavy lines in it, it needs more wedging. if you are using new clay you should not have to wedge but use it, making sure as when you are building that you do not leave air pockets in the piece work, otherwise it can explode in the kiln, worst case scenario
You should use air dry modeling clay that is moist and ready to use. Either that or I would use any clay that you would fire in a kiln. Otherwise, It probably won't be food safe. It depends on what you will be puttuing in it.
Paper Clay is any clay fine enough for an artist to use, and cellulose (paper) fibres added to give strength to and reduce the weight of the clay. The finished object is air-dried.