Look at this thing of beauty and artistry!
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That is truly beautiful.
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Neat! (And that is a Master at glassblowing!)
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Daaaaamn
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It really is indicative of great glassblowing skill. I don’t know about anyone else, but I sat there chewing my nails in anticipation that it was going blow apart.
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I have done both furnace glass and the borosilicate “Laboratory” glass. For someone routinely making such Laboratory glasswork, it is not extremely exotic and indeed most of the joints are a bit rough, but that does not keep it from being very cool. I am trying to look at if it is using the expansion or the vacuum formed by the steam condensing as was the case with the original steam engines.
It occurs that using the condensing cycle would be very much easier in those times as they would not need the many high-pressure fittings required for the use of steam pressure that is much more efficient. 
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