@ SnozzleBerry:
OK, I’ll try to answer your questions. Maybe I wasn’t clear enough in my earlier posts.
First, there’s nothing wrong with using stainless steel screens. They will work, and they won’t impart any harmful substances to the vapor. And multiple screens will hold liquid DMT, but…
As you know, when DMT liquefies, it tends to “travel” away from heat. Liquid DMT on/in a bed of stacked screens will tend to move to the coolest area – namely the glass wall of the GVG chamber. Once the liquid DMT reaches the glass, it will tend to flow downward and out of heat range, meaning it won’t vaporize. This means that a significant amount of DMT
might be wasted. (Take a look at the glass surfaces in the chamber near the hole leading to the body of the pipe after a few uses. You’ll see what I mean.)
I use copper mesh shaped into a thin disc. This is not the same as stacked copper screens. First, the mesh “wires” are not circular in cross-section like they are in screens. They’re rectangular and have much more surface area per unit length. This allows for more liquid DMT to cling to the wires. Second, there are fewer “terminal ends” in contact with the glass, so less DMT can migrate to the glass sidewalls. The result is less wasted DMT, and because of the greater surface area, more rapid vaporization.
So to summarize – I use copper mesh because less DMT is wasted (by reducing migration to the glass sidewalls) and vaporization is more rapid (because of greater surface area).
(I never realized that people were so sensitive about their smoking methods and devices.

)