Glass Tips from Verrier

“I'm making 3mm French Vanilla sconce covers; … ·         [initially they were] fine, but now 1.5" bubbles form during the full f...

  The course from which this information is taken is based on float glass.   This is a soda lime glass just as fusing glass is.   The genera...

There are frequent suggestions that holds in the rise of temperature for glass are required.  Various justifications are given.  A few notes...