I am really new to this forum (since 15 min. ago) and just happened onto this subject. I am a fan of Potters Choice glazes and have had good luck with all except Ancient Jasper by applying 3 good coats and firing to a cone 5 in my digitally-controlled kiln and holding for 1 hour. The only good results that I have had in layering PC glazes is by putting on a good base layer and using a split fan brush with strokes in different directions leaving gaps or open spaces for the base color to "peep" through (3 layers for the covering layer). I have really enjoyed your comments and do feel connected.