I was trying to find a more efficient and tasty method for volatilizing concentrates. Dabs on glass seem to taste a little better than on metal. If only a flame wasn't necessary to heat the nail. Electric heat is the only other choice. How to get the glass nail to interface with the heat source is the real challenge. I cast aside all conventional thinking to have a heavy mass for heat retention and thought about using a contact lens size and shaped disc of glass. The shape of the disc allows it to float in a laminar stream of air much like a ping pong ball does. The disc will hold a small amount of concentrate material (shatter, oil, wax, or hash). I have a stainless steel heater cover installed in addition to the glass heater cover on my LSV. The glass disc fits perfectly onto the end of the ss heater cover and levitates when hot air is gently drawn through the glass tube. I have a whip on the end of the glass tube so I can watch the action and keep the tube vertical. The taste is very good since the material only touches glass. The heat is just enough to volatilize the oil so you don't get a scorched oil taste. The amount of material that would be used for one dab produces many more doses using this method. The whip can be passed around between multiple people. The 18mm glass roasting tube is the fluidizing one I use with flowers. The screens are just removed. The LSV power level is set all the way to high.