Passing along some Darin Morgan info

It's funny that the end was chop off like that.
But with my first flow bench i used a smoke machine, that we used to find Evap leaks(gas vapor leaks in a automotive fuel system). When i worked at a dealer ship. Where the smoke escaped it would leave a trace that you could pick up with a ultraviolet light. would jump right out at you.
I sneaked this machine home one day and let the smoke feed in to my head/flow bench. at different lifts it made different pattern. But not knowing what i was seeing and unable to take a picture or video of it. And only had one night to experiment with it. I didn't learn much from it.

One other thing you can't run methanol or any other flammable liquid through a standard bench with out creating A BOMB.
Even spray paint would eliminate the usability of your bench afterward as there would only be splinter of the bench afterwards.

Too expensive to buy but if i ever go the chance to barrow one again. it would be fun to try again.