I'm not sure as to which is better, bong or pipe. But in order to do the "sandwich" method you place a little bit of herb of your choice (like marijuana) into the bowl, then put a pile of DMT (whatever size dose your wanting) in the middle on top of the herb. Then you put a good amount of herb on top of the DMT.
If you ignite just the top portion of herb lightly, while sucking, you should cause the DMT to vaporize fairly efficiently. Once you have got it to light keep sucking, and if you put only 1 dose of DMT in finish all of it.
A buddy of mine doesnt always put the top portion of herb on but its easier to waste DMT that way. As you dont want the flame to EVER touch the DMT. The heat from the top portion is enough to vaporize the DMT alone so no need to keep a lighter on it, and no need to torch it.
If you ignite just the top portion of herb lightly, while sucking, you should cause the DMT to vaporize fairly efficiently. Once you have got it to light keep sucking, and if you put only 1 dose of DMT in finish all of it.
A buddy of mine doesnt always put the top portion of herb on but its easier to waste DMT that way. As you dont want the flame to EVER touch the DMT. The heat from the top portion is enough to vaporize the DMT alone so no need to keep a lighter on it, and no need to torch it.