mary Lou Zeek on mon 10 aug 98
Hello all,
Recently we have been having Majolica nights at our community ceramics
center with very good success. Unfortunately lately we have developed a
problem with our glaze. After firing some of the pieces have what
appear to be "wrinkly skin." This does not appear to be a problem with
under or overfiring as some pieces will have it while others next to
them do not at random places in a vented Skutt KM-1227. We are using a
Majolica base glaze called "Stella's Majolica" (Sorry I don't have the
recipie handy as I'm borrowing this computer and account at the moment)
It appears to be a fairly standard white Majolica glaze. We have been
spraying the pieces with a H2O/CMC mix as a glaze hardener, could
excessive CMC cause this wrinkle effect? The pots with the problem
appear random, and I have done the majority of the glazing and the CMC
spraying so all of the pots should be consistant in their glaze
application. Could this be a gassing problem? The work is fired to a
soft ^05 bisque and then ^05 glaze.
Any help would be appreciated.
Karl Knudson
Formerly of Eugene, OR, now in Salem where it rains almost as much.
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