This is the 3rd tutorial video in a series of glass blowing basics and glass studio processes.

In this short tutorial video, Bernard Katz covers what the main components are that make up a basic simple glass formula.

Bernard fills the furnace with the ‘batch’ along with some recycled glass.

Glass blowing basics tutorial 3 - what is in glass

He throws in about 50 pounds or so every 1-2 hours until the furnace is full.

Filling the furnace is a process called ‘charging’. Melting a full tank of glass takes about a day while the furnace is at a high temperature of around 2400 degrees.

Resources and more information used in this video about glass formulas can be found at :

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