Question About Color Of Clay And Resulting Color Of Textured Places

[clay lover]

In reference to white glaze, Does the color of the clay usually determine the color that the thinner places have, from breaking over the texture?

Specifically, I saw a piece with a beautiful soft waxy, white glaze and the texture showed up gray.  I want that.  do I need to be using gray clay to get it?  Don't have access to gray clay.

 

The white glaze I do use is glossy, good on texture, but always show up as rust, tan if on buff or darker clay, and toilet white on white clay. So I figure it's all about the clay color. Nice, but not that beautiful gray satin combo. Any texture is going to show up as shades of tan-brown.   

[Marcia Selsor]

yes. you are right. It is the nature of what happens when a glaze breaks over texture. It thins out and the clay color comes through.What is your firing temperature. Maybe you can add a gray stain to the glaze.

A small % of black stain could do the trick. ..something like .2%

Test and see.

Marcia

[Pugaboo]

Not an expert but couldn't you wedge some black mason stain into white clay and get gray then glaze over that?

 

T

[Min]

How about a grey slip over your tan or buff clay? A white base slip plus grey stain, Robin Hopper has some good base slip recipes for various temps. If your white glaze has about 10% zircopax in it then a white slip with RIO (10% plus or minus a couple %) will also give you a grey. (example on the oval platter in my gallery, it has cobalt over the iron slip also)

[clay lover]

all good thought, thanks. I have a pug mill, guess I could make gray clay.