Marko Posted September 20, 2015 Report Share Posted September 20, 2015 I have seen pictures of some beautiful works of pottery art. They use a porcelain on red clay. They then carve through it. Really beautiful. Can I use ^6 porcelain on ^6 stoneware. I would try it today, but my hand is in too much pain. Link to comment Share on other sites More sharing options...
Chris Campbell Posted September 20, 2015 Report Share Posted September 20, 2015 Yes, I have often used porcelain slips on other clays. I mix mine as thick as yogurt. Link to comment Share on other sites More sharing options...
Guest JBaymore Posted September 20, 2015 Report Share Posted September 20, 2015 The typical "white slip" used on stoneware at cone 10 is basically a porcelain recipe slightly adjusted for shrinkage match and opacity. So... yeah. best, ..................john Link to comment Share on other sites More sharing options...
Marko Posted September 20, 2015 Author Report Share Posted September 20, 2015 Yes, I have often used porcelain slips on other clays. I mix mine as thick as yogurt. on cone 6? Link to comment Share on other sites More sharing options...
Callie Beller Diesel Posted September 20, 2015 Report Share Posted September 20, 2015 Photographic evidence that it does work. I used two commercially prepared clays that were within >1% shrinkage of each other. Both from Plainsman, both cone six. For this particular pairing, I had to make sure that I applied the slip at the soft leather hard stage, or it tended to chip off. It also helped that the glaze (made by the same manufacturer) was formulated to fit them both. Link to comment Share on other sites More sharing options...
Marcia Selsor Posted September 20, 2015 Report Share Posted September 20, 2015 we used Plainsmen clay in Montana. Some of it is actually mined on a ranch North of Billings. Very nice clay and porcelain. Rich surface on your piece, Diesel. Marko, you can calcine some kaolin or ball clay to add to the slip to adjust the the fit of the porcelain to the stoneware. just put the kaolin in a bowl and fire in your next bisque. It doesn't have to go that hot, but it will work. Marcia Link to comment Share on other sites More sharing options...
Chris Campbell Posted September 20, 2015 Report Share Posted September 20, 2015 Here is my web page tutorial on using colored slips ... including white ones. http://ccpottery.com/slips.html When I did production work, I often brushed Southern Ice slip on lower firing, less expensive porcelain to get a brighter white surface. I have also used it on Terra cotta bodies and the contrast is beautiful. Link to comment Share on other sites More sharing options...
Chantay Posted September 20, 2015 Report Share Posted September 20, 2015 I do this frequently. I can't think of the name of the porcelain. I put it over red rock. I have had success at any point before leather hard. Marcie, I just read today that to calcine a material it only needs to be fired to cone 022, 1000 degrees. Link to comment Share on other sites More sharing options...
Marcia Selsor Posted September 21, 2015 Report Share Posted September 21, 2015 That is true but if you are not firing a kiln for a cup of ingredient, it will survive at 09 or 06. Marcia Link to comment Share on other sites More sharing options...
Marko Posted September 22, 2015 Author Report Share Posted September 22, 2015 we used Plainsmen clay in Montana. Some of it is actually mined on a ranch North of Billings. Very nice clay and porcelain. Rich surface on your piece, Diesel. Marko, you can calcine some kaolin or ball clay to add to the slip to adjust the the fit of the porcelain to the stoneware. just put the kaolin in a bowl and fire in your next bisque. It doesn't have to go that hot, but it will work. Marcia Thanks, got it on my todo list. And I'm glad you said how to calcine, cause I was like. Wah? lol. Link to comment Share on other sites More sharing options...
Marko Posted September 22, 2015 Author Report Share Posted September 22, 2015 Here is my web page tutorial on using colored slips ... including white ones. http://ccpottery.com/slips.html When I did production work, I often brushed Southern Ice slip on lower firing, less expensive porcelain to get a brighter white surface. I have also used it on Terra cotta bodies and the contrast is beautiful. Thanks Chris. Link to comment Share on other sites More sharing options...
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