I have had some beautiful experiences with DMT so far. Some incredibly beautiful places and environments, but lately I've been having more trouble being efficient with my DMT. Using the "machine" -- a very hard plastic single-serve alcohol bottle with a Chore boy copper piece rolled up in the cylinder, I've gone the deepest.

.....
I noticed, however, that if I take the Chore boy out and light it from underneath without DMT on/in it, whether using a standard flame Bic or a blue-flame torch lighter, the copper itself will BURN. It is not a neutral element to merely heat up.
I am at a crossroads in that I can get really deep using the machine method of first melting some DMT into the copper, then holding it upside down and letting the piping hot air of the Bic flame funnel up into the spout of the device. But, I do not know how much or how long I should hold the flame to just vaporize all the DMT, but avoid burning the copper itself. The eerie thing is that burning copper smells
very similar to DMT vapor, so it's difficult to know whether I'm getting a nice huge hit of beautiful DMT vapor, or straight burning copper...
My local headshop does NOT carry a meth pipe either, also known as a glass dick.
I have tried to place the DMT on some half-burnt marijuana as well, and I had some great success a few times, on another attempt though, the entire weed/DMT goo substances starting burning bad and got thick black like drippy tar, so now that method of using my normal glass chillum to smoke DMT seems to not be a reliable way either.
I really wish DMT wasn't so finicky. I even went back briefly to using an aluminum foiled-fashioned pipe and that is hit or miss - the vapor slides off the DMT liquid so quick and just scatters.