Many people have asked to see me heat up mercury by either using a torch, or dropping a red hot ball bearing in it. The problem is the mercury fumes/vapors that would be unleashed if I did this. I've been thinking about a safe and responsible way of doing this without releasing any gas. Using a fume-hood would not solve the problem since fume-hoods just exhaust the fumes outdoors.
One thing I am going do some experiments with is a "visible retort". A retort is like a still that is used to heat the mercury up, evaporate it and then condense it back into a purer form. These are used to separate gold from mercury since gold has a much higher boiling point than mercury and are also used to purify the mercury.
I am going to do some experiments using glass test tube vials and see if they will handle the heat required to evaporate the mercury. If that test passes, I will try it with a small amount of mercury. It will be a very small-scale demonstration.
Each demonstration I do is thought out quite well. I have to make sure I do not expose myself to the mercury and have to be able to contain the mercury in case of a spill. I normally do not show the precautions I take or the clean-up/decontamination I go through afterwards since that is boring. Since I don't show the precautions, people who have not seen my videos before have a natural reaction to assume I am being careless. Everyone who knows how I do these often get a chuckle at the outrage some people express.