Help in answering your question

[Stephen Richard]

I would love to be able to contribute to the solution of your problem.  But you have not given enough information for me to begin.  Where are the sharp edges?  are they long? are they spikes? something else?  What temperatures are you using? What kiln wash are you using?  has it been used before?  What is different between this firing and the others?

Stephen Richard

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