This is natural and will
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May 6, 2011 at 9:57 pm #12069
Stephen RichardParticipant
This is natural and will increase with further firings of the piece. The irridised surface is a thin coating of metal that has different expansion and contraction characteristics than glass does. So yes, everyone experiences this.
I have no idea what a low fire irridised surface may be. Maybe it is the kind used by Spectrum art glass that fires off at lower temperatures, rather than the S96 irridised glasses.
Stephen Richard
blogs at: http://www.verrier-glass.blogspot.com/ and http://www.glasstips.blogspot.com/
