βefore you take a class, before you buy books on glass blowing, before you spend a dime, do this. Go to Handbook of Laboratory Glass Blowing link
Even though it was written in 1921 and has references to using a foot bellows, it is something you should check out if you are interested in learning flame work glass blowing. Also called Lampworking A lot of techniques for blowing glass tubes (i.e. Art glass, pipes and other applications) were pioneered by people now dead and gone.
This book’s copyright has expired, so it is FREE. Do not pay “Rocketbrain” $11.99 for this book on eBay!
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