The hard truth is the lack of knowledge the blower has that made the piece. Many times it is a cadmium color that boils, but all glass will boil if heated too hot. A skilled blower will know how to use the colors so they do not boil.
The hard truth is the lack of knowledge the blower has that made the piece. Many times it is a cadmium color that boils, but all glass will boil if heated too hot. A skilled blower will know how to use the colors so they do not boil.