eoteceramics Posted October 15, 2013 Report Share Posted October 15, 2013 Hi, is it possible to mix an underglaze with coloured slips and then brush onto green ware? I haven't the colour I need, but if I could do this it would solve the problem. Thanks, Julia Link to comment Share on other sites More sharing options...
Chris Campbell Posted October 15, 2013 Report Share Posted October 15, 2013 Yes. I have done this. Bear in mind that adding these colors to a white slip will lighten them. Test first to make sure the colors are right and that the two formulas interact well before using on a good piece. Underglazes have ingredients in them that keep them wet and spreadable longer so this can cause issues. Link to comment Share on other sites More sharing options...
eoteceramics Posted October 16, 2013 Author Report Share Posted October 16, 2013 Thanks for reply Chris, will give it a trial run ! Link to comment Share on other sites More sharing options...
perkolator Posted October 16, 2013 Report Share Posted October 16, 2013 if you have access to the actual mason stain used in the underglaze, you can make a colored slip. just make your white slip in dry form and add 10% stain to this before mixing in water, then sieve well. my go-to white slip recipe is equal parts (25% each) Silica, EPK, OM#4, and Custer Feldspar. Very versatile white slip recipe that can be used from earthenware up to stoneware temps. to make your own underglaze, use equal parts (33% each) Clay, Flux, and Colorant -- usually I'll do either EPK or Ball clay, Gerstley Borate or a frit like 3124/3134, then the colorant (oxides or mason stain). usually i'll use CMC solution as the water for UG. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.