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Refractory wash for kiln shelves. FOR EVEN APPLICATION: Mix to a paintable consistency, place kiln shelf on flat stable surface, ‘sweep’ the mixture on to the top surface of the kiln shelf using a large decorators brush in consecutive stripes. Do not go over and over the same area. Once the surface is covered, repeat the stripes at a 90 degree angle. Repeat until a satisfactory thickness has been achieved. If damage occurs, simply dab mixture into the gap. Chip glaze drips off with a chisel before reapplying wash.