I invented this in high school with a magnifying glass and a mason jar. Mine burned the weed in the jar and contained the smoke till you hit it out of a tube in the lid. carb hole right next to it. I smoked thai stick out of it...many moons ago.
It does a bit more than vaporize. To the Triple Diesel, I added a piece of wax on top. A bowl lasted an hour. Couldn;t even finish it. Got nice thick tokes. Sunning on a nice day, and doing solar bowls is the best. Thanks for reminding me. !