Very cool! :) Pyrox glass contains boron so it stands up to heat and rapid temperatures changes, even quite shocking ones. But that said, it is really a fascenating demonstration of how this glass is such a good product...
I would have never thought that a Pyrex glass tube that thin could handle that kind of heat, and I have never seen square copper tubing, there are so many nuances I notice in your videos that stand out to me all the time.
Mate, what you are doing is awesome and innovative. I have a very small unit with parts from ebay. Would love something like what you do but about half the size. The only hard part is the shipping to Australia. As a matter of interest what would it cost for plans and drawings so I could make my own (well me son can make it for me) Cant wait for Pyrex glass tube composition, I'm sick of shorting mine out and blowing stuff up. Keep up the vids they are great.
