Larry,
A 20 lb bag usually gives me 25 softball size pieces of clay. Since my
budget was so small for so many years, I could not afford to buy glaze for
all the projects. A good alternative is to let the students paint the bisque
fired clay with tempera paint. Seal the paint and add gloss by applying a
thin layer of floor wax. Any cheap wax will do. You would be amazed at how
beautiful these turn out.
Martha
I've ordered about 700 pounds of low-fire clay (reddish-brown), and about
> 300 pounds of a wheel throwing clay. There might be time for me to order
> still more, but I'm wondering if some might help by offering a simple
> formula.