This is how I get the thickest vapor:
--Mod the switch so it latches. Insert your battery and leave it to warm up while you grind your herb or at least 30sec.
--Grind up some DRY herb. It is very important that it be dry.
--Pack it into the bowl. I do it halfway, not super tight but firm. I then place a small solo screen on top.
--I then place a glass mouthpiece that I rigged up, similar to the TET version. I get an open airpath this way. I start to puff until I see some vapor, which is almost immediately. From there I get PLUMES of thick vapor. I will post a video soon. I just wish this was possible without so much modding on my end.
This is what mine looks like: