I am a glass maker i live in new Jersey. where the factory is. I spashal tools and a lot of air.It is fun it is hard to do it.I use soda line glass  so it is better to form.That way we have glass today.I blow throw the pip to form what ever i wont. The glass has to be cole and bolon slowly.Or it will become berakaboll!. I only work 6 to 9 months a year.