Because it absorbs water and when the soil and plant are placed in it, the pot won't take all the water intended for plant.
yes it does harden overnight.
To cure a clay pan before using it, boil water and add in some white rice.Once the rice is cooked and strained out, the water can be used to soak the pan in overnight. This should be repeated several times over a few weeks until all of the mud has been removed.
To cleanse the digestive system, mix 1 tsp of powdered clay in an 8-10-ounce glass of mineral water and allow to stand overnight
you leave it out in room temperature overnight
bentonite is a clay that absorbs multiple times its own mass in water when submerged. Therefore, it was most likely used to absorb water around the tank if there was a leak.
Clay can contain air bubbles which contain water. When the clay is fired, the heat rapidly expands that water vapor, causing the piece to explode. Therefore, clay pieces should be hollow, with a hole for expanding air and water to escape.
it cracked because you cooled the rappidly heatd the pot you should have put it in then turned on the oven so it would eat the pot slowly.
If you make the modeling clay into a bowl shape, it should float
Soft clay is simply clay added with water. All you do is mine clay (lvl 5 mining req.) take a bucket of water and use the clay on the water.
one of them is clay
Because clay is a solid and water is a liquid
Clay, in fact, does sink at certain conditions. ~Liz http://eragongal44.webs.com