This video illustrates the three fundamentals of glassblowing:

1. Gathering enough glass out of the furnace.

2. Putting an even bubble into the glass.

3. Cutting a constriction (neck-line) into the bubble so it can be broken off.

Demonstration of using a blowpipe to gather glass and create a simple bubble. Also how to use the Jacks to create a constriction or neck-line in the bubble so it can be broken free of the blowpipe after it has sufficiently cooled.