Hard Look II' (part 1: 'mortar')
Materials and techniques
A bubble is blown into a hot gather of glass. The bottom of the bubble is flattened. A punty is fixed to the base with a little glass. The bubble is cracked off the blowing iron. As the punty is turned, jacks are put inside the bubble to shape the rim. The mortar is cracked off the punty and put in a hot kiln to cool off slowly.