"Amber" wrote in message
...
The glaze you would want to use is called under glaze. You can put
this
glaze on either green ware or bisked ware. But if you put the under glaze
on
while it's still green you would than want to put a clear coat on.
My instructor showed us an example of what happens when he put a
glossy
glaze on a green ware pot. It ran down the side of the and left a ring at
the bottom because the glazes had nothing to stick to.
A.G.

No underglaze is a different thing. You can glaze greenware, or unbisqued
pottery at the leather hard stage (more difficult because of drying
shrinkage) or at the bone dry stage. Glazes mostly have to specifically
formulated for "once fired" work. It has dissadvantages, application of the
glaze can be done with spraying, painting, or very carefully dipping but you
run the risk of the pottery getting too wet and just falling to bits, or
even falling to bits into the bucket of glaze, and thus also ruining your
glaze. Bisquing also removes impurities that can cause pinwholing and other
problems.
Underglaze are colourants that go under a glaze, best IMO applied to dry
unfired work. It is then bisqued and a clear glaze applied and fired again.
If you underglaze bisqued ware you often have to refire before glazing to
burn off gums etc used to make underglaze flow well, but which are inclined
to resist the glaze a little.
Yes John I have tired once fired work, its fun )
A