A friend makes glass beads and I tried to talk her into switching to propane/oxygen. She had oxy/acetylene though. Other than the torch being mounted to her bench, her setup looked pretty typical of what you would see in a framebuilding shop. I watched a documentary on glass pipe makers and everyone in it used oxy/propane. Glassblowing can take more heat that framebuilding, but some of the people that work in smaller pieces have setups that would work for either. When I started looking into getting a concentrator, there was a place that sold refurb medical concentrators specifically to glassblowers.