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mason stains vs. underglaze

updated sun 24 mar 02

 

Craig Martell on fri 22 mar 02


Hi:

There are a lot of Mason Stains that will go to cone 10 and beyond. Look
at a Mason chart. The stains that have an asterisk by them are suitable
for use as body stains and you can use them in slips. I use quite a few
Mason stains in slips that are fired to cone 10.

regards, Craig Martell in Oregon

julie grunduski on fri 22 mar 02


I am actually getting started once again at pottery but totally consider
myself a newbie given everything I have read on this site. What I have been
working on lately is using mason stains to color stoneware slip which I then
marble or swirl different colors into a slab mold to create the design I
like then use the slab to make plates or wall art....my question is that
when I use mason stains as a base stain to the stoneware and fire to cone 6
the colors come out totally different than I anticipate. I started thinking
maybe I should use underglazes that can take a cone 6 to get better colors
or move down to a cone 04 earthenware. I would rather stick with stoneware
but not sure how to get the colors I want when I am firing at a 6. Anyone
have any pointers on this?
Thanks, Julie

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Ron Collins on fri 22 mar 02


Try Amaco Velvets....most hold their color fine at ^6....Melinda Collins,
Antigua, Guatemala

Snail Scott on sat 23 mar 02


At 07:43 PM 3/22/02 -0500, you wrote:
...my question is that
>when I use mason stains as a base stain to the stoneware and fire to cone 6
>the colors come out totally different than I anticipate. I started thinking
>maybe I should use underglazes that can take a cone 6 to get better colors
>or move down to a cone 04 earthenware.


Are you just using the stains 'straight'? That can
be tough to control. Try mixing them into engobes.
But remember that the color of some stains can be
affected by the chemistry of any overlying glaze.
Try a variety of clear glazes over your stains;
you'll be amazed at the wide difference in some
colors.

-Snail