Inappropriate moulds

[Stephen Richard]

I don’t know who/what company made the mould, but it seems to me to be an innapropriate mould. unless it was supplied with a first stage mould.  Deep moulds usually need a shallower 1st slump mould before putting into the second, final stage mould.  Slow slumping – as you did – usually helps and so does low temperature slumps – they take a long time though.  Although I have been slumping for a long time, I would not attempt one like this even now.

Stephen Richard

blogs at: http://www.verrier-glass.blogspot.com/   and  http://www.glasstips.blogspot.com/