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Has anyone tried coloring gray stoneware with mason stains? I've used mason stains in cone 10 porcelain and it's been great, but I'm wondering if cone 10 stoneware is colorable too? I can of course test this out, but if someone else has done it that's of course a lot less time consuming!

Of course the coloring won't be as bright as porcelain no matter what, but I'm more worried about the shrinkage rate changing possibly if I decided to use a colored stoneware with my regular stoneware.

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It will work.  I've done this to produce a marbled stoneware.  As long as you don't add massive amounts of stain, I don't think it will change the maturing temp of the body.

 

You'll still need to test to develop the colors you want.  As you say, they will be somewhat muddied by the iron in the stoneware.

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I like dirtying up grey stoneware with all sorts of native materials. I have not seen that it makes much difference to shrinkage, but then again that has not been a priority. But if you are looking for a high degree of control native ingredients are probably not the right way to go....

 

You would be surprised what can be added to plain old concretey looking grey stoneware to make it much more sexy. I have used stains, but not the ones made by Mason or others. I like cheap and nasty stains like, for instance, concrete stain... With a bit of digging you find out that these are mostly iron oxide anyway.

 

Obviously this kind of experimentation leans more in the decorative direction than the functional one.

 

And for bonus mileage watch what theae kinds of additions do to some of your glazes!

 

Disclaimer: the provider of this advice cannot be held responsible for any impact of said materials on kilns, furniture or potters!

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