From what I've read about DMT, the freebase has a melting point of ~45C (Celsius) and a boiling point of ~80C, while the salt has a melting point of 166C... and that most people use freebase.
If that's the case, I'd highly recommend people go with a vaporizer that's capable of much lower temps than 160C-170C (320F-340F). For example, the VapeXhale EVO heater temps go down below 100 C (~200F)... and the VapeXnail glass nail would work perfect in combination with an all glass airpath
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I heard that in reality though, actual vapourisation is above the boiling point, so 160c shouldn't be too high. Also since the temp sensors aren't in the chamber in either Volcano or Extreme Q, in reality temps are probably 10c lower in the actual bowl or chamber. Haven't got a precise enough laser thermometer to test it but I've heard there is a fair bit of drop off. Not so much with the Arizer with ddave mod I presume though. Lots of reports around 150-170:
https://www.dmt-nexus.me/forum/default.aspx?g=posts&t=71004
Not sure about the salt vs freebase thing
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The boiling point of DMT freebase seems to be around 160C and with a vaporizer you might want to set the temperature around 180C for a solid and constant vaporization."
Here it says boiling point is 160c:
https://en.m.wikipedia.org/wiki/N,N-Dimethyltryptamine
Read a bit about it but just wanted to get some opinions on what vape would be best to use, Arizer stock with whip or bag, Arizer ddave with whip or bag, or Volcano
A report on using the Arizer with a bag, without ddave mod/stock cyclone bowl:
After a lot of trial and error, this seems to be the best procedure to get the thickest vapor:
1. preheat at 230C with fan=3 with bag disconnected for a few minutes (no DMT yet)
2. put enhanced leaf in the bowl
3. Turn heat down to 210-215C, run at fan=1 until you see thick vapor, then turn up to fan=2. You can get vapor at 180C, but to efficiently vaporize all of the DMT in one bag I found that a higher temperature is needed.
4. When bag is full (or you see no more vapor being produced), turn off the fan, disconnect the bag.
5. you should be able to empty the bag in 3-5 big lungfuls, hold each for 5-10 seconds.
6. breakthrough!
It definitely seems necessary to use a higher temperature than you would think - the bowl is 1cm away from the heating element so the reported temperature is probably higher than the convected air's temperature. Going over 215C produced a harsher vapor that was closer to smoking enhanced leaf in a bong.
Volcano advice:
It took me a while to get this right with a Volcano too.
Its basically a rate problem, heating only the "right" amount of spice at the right temp produces a fairly dilute vapor that you can't inhale quickly enough to breakthrough.
First, if it's just you travelling, halve your bag, tie it off in the middle with a cable-tie or wire etc
Second, use about twice the amount of spice you would normally consider sensible. It's OK, it won't all vape...
Set temp about 190-200C
Fit chamber, run fan til the you see the new pope is chosen, clip on bag.
When it's full, you'll have a small bag you can do in two quick, strong hits max.
The key thing is, everything needs to be in you in two quick hits. The first time I got this right, the second time I huffed the bag, it turned into a string of ping-pong balls