putneyal Posted May 3, 2010 Report Share Posted May 3, 2010 My bisque ware which I subsequently smoke fire is naturally not fired higher than 950C. I have been trying to attain an ultramarine blue which would contrast nicely with the deep black of the smoke firing. But because of the low temperature, I find that using a cobalt slip does not fully develop the colour. Does anyone have any idea how I could achieve a deeper blue slip? Link to comment Share on other sites More sharing options...
Chris Campbell Posted May 3, 2010 Report Share Posted May 3, 2010 You could try mason stains or underglazes. Link to comment Share on other sites More sharing options...
putneyal Posted May 3, 2010 Author Report Share Posted May 3, 2010 You could try mason stains or underglazes. Thanks Chris. I must admit that I have never tried mason stains, but that might well be the way to go. Presumably I could add them to a slip in the usual way? Link to comment Share on other sites More sharing options...
Chris Campbell Posted May 3, 2010 Report Share Posted May 3, 2010 Visit the mason website, look at the color charts and select stain that is recommended for use in a clay body. The blues I have used get darker the higher they are fired. Your base clay color for the slip should be very white. I just mix clay, water and stain in my studio blender ... but I am sure others have actual recipes. Link to comment Share on other sites More sharing options...
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