Duncan Cover-Coats Underglaze Black Brown CC165
Duncan Cover-Coats Underglaze Black Brown CC165
Colors shine with polishing technique which is done by completing application, mixing a further quantity of the color half and half with water, and applying to small sections of the piece at a time.  Just as the wet look disappears, polish briskly with a soft cloth.  Overlap each area as you go until finished to a satin sheen.  After firing this surface will be water resistant but not waterproof. 
Glazes with Zinc can cause discoloration of underglazes.  Use of Zinc-free covering glazes is recommended.  
Wondering how the Duncan Glazes do at mid-fire temperatures?
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