Think about your slumping temperature
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February 3, 2013 at 6:52 pm #12827
Participant
I have not had to re-apply kiln wahs to my moulds for years. If your kiln wash is chipping off after a few firings, you should consider at least two things:
Are you firing higher than you need? usually 630 – 677C is enough with a longer or shorter soak is enough.
Are you putting a lot of kiln wash on the mould? A thin layer is most often better than a number and thicker layers.
My method of preparation is here: http://glasstips.blogspot.co.uk/2012/10/mould-preparation.html
Stephen Richard
blogs at: http://www.verrier-glass.blogspot.com/ and http://www.glasstips.blogspot.com/