[MerrimanInd]

My roommate in college worked at GE's Global Research lab in Schenectady. As a bit of a relic from the heyday of US corporate research they still had an in-house glassblowing department for producing all the necessary glassware for all the labs and chemical/material research!

[mattkrause]

This is surprisingly common at big research universities! My classmate even managed to take a course on glassblowing--and have it count for her PhD!

[s0rce]

If your institute doesn't have an in house glass blower and you need one, I've been happy with these guys for the past 20 years https://adamschittenden.com/

[jonjacky]

The first session in my freshman Chemistry lab was on bending glass tubing by heating it to softness with a Bunsen burner. One of my classmates, with a burned finger, said that the takeaway lesson was "hot glass looks like cold glass".

[pumnikol]

Probably more for repairing than producing, in my experience. That stuff's expensive and breaks easily. An old lab joke: Which daily sound scares a chemist the most? - Krk.