Yes, use epoxy.
It will be rock hard.
Add water to it.
With superglue
Yes, certain types of clay can dissolve in water. These types of clays are not fired, non oil based clays, but natural and air dried clays.
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.
A dried clay cannot be classified as a rock
"Caked clay" refers to clay that has dried out and hardened, typically forming a hard layer on the surface. It can be difficult to work with and often requires rehydration to make it pliable again for sculpting or pottery.
nope, its made up of plasticine (which is non-toxic)
Dried clay
Yes, you can use acrylics on clay after the clay has been dried.
Yes, use epoxy.
It will be rock hard.
Add water to it.
no.
To fix cracked clay, you can gently moisten the clay with water and then carefully press the cracked pieces back together. Allow the clay to dry completely before handling it again.
desert gravel is just dried clay