- Since the rings don't form around every pot, is this the result of 'powdery' glazes sort of misting off during the firing?
- While pots don't seem to stick when set on top of a 'ghost ring', do I really need to be adding more kiln wash? My kiln wash is 25% calcined EPK, 25% EPK and 50% Alumina Hydrate and it holds up really well otherwise.
Glaze Ghosting on Shelves
Posted 20 September 2012 - 09:50 AM
Posted 20 September 2012 - 10:04 AM
Kiln Repair Tech
L&L Kilns Distributor
Owner, Neil Estrick Gallery, LLC
Posted 20 September 2012 - 10:16 AM
Adjunct Professor of Ceramics; New Hampshire Insitute of Art
Former Guest Professor, Wuxi Institute of Arts and Science, Yixing, China
Former President and Past President; Potters Council
Posted 20 September 2012 - 07:50 PM
Unless you are having really significant "disasters"... that kiln wash recipe you are using is a pretty expensive mix. Alumina hydrate is expensive compared to silica and stuff like EPK. Likely is it "over-kill" for most uses. You might save yourself some money by, at the MOST, using 1/3, 1/3, and 1/3. Likely a 50 / 50 of EPK and silica would do you with no alumina hydrate.
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