How to seal air dry clay, so that it's water resistant and non-toxic?

Question

I was wondering what I would use to seal air dry modeling clay, so that it's water resistant and non-toxic?

I did a lot of clay work in high school, when I had access to a kiln, and was really great at it, and want to continue now that I'm no longer have this available to me.

I wanted to make cups, but am not sure what I would use to make it water resistant, and make sure that the people drinking from it don't die from the toxins? ...

Thanks!

Answer 1

Unfortunately air dry clay won't work. Air dry clay is not always toxic but it is not sturdy enough or water tight



You could look at kilns if you live where you can have one



I joined a potters guild that has kilns



There are some places that will fire pieces for a fee, They normally want you to buy materials from them



You can also look at what classes you can take that will fire pieces for you

Answer 2

You can use a water-resistant glaze on the clay, but I'm afraid that I'm not entirely sure about how to stop it from being toxic. You could perhaps use a non-toxic clay aimed at children?