Over the years I have used various copper or Oribe glazes over porcelain and in many cases, it is immediately apparent that alterations are in order. Using the glazes over the pure white surface with little or no iron in the body can lead to a rather bland or washed out surface and being somewhat disappointing. In using porcelain and Oribe together, I have just made slight alteration to the glazes to get a rich and pleasing surface, its not rocket science, but it works none the less and is a quick fix. Without some slight glaze tweaking, I have had a number of pots not come out as I would hope and now I find it best to take the extra effort and make the glaze match the clay or porcelain as it were.
Illustrated is a small bottle vase with wide flared mouth. The pot was both incised and carved to give the piece some additional sense of dimension in a pattern I call a flame blossom. In between each blossom is a recessed panel that had the surface ticked away to create depth and texture. Out of the bisque, the bottle was glazed in an Oribe and then I brushed an additional layer of glaze over select areas of the pot including around the inside of the mouth to create two distinct visual textures. A momentary addition to the glaze assures the surface I intended as it comes out of the kiln.
"Disappointment is the nurse of wisdom." Boyle Rouche (1736-1807)