It's about time for me to chime in. With 40+ years of smoking all forms of cannabis I thought I'd try some jwh for stealth purposes. My personal grow op, yielding the wondrous Durban Poison is causing me immense parania, given inquisitive teens and a wife who no longer partakes, but I think is cool with it.
I've gotten the fiendish asthma over the last few years so my Vapir One is something of a godsend. I weighed up 5mg of a 073/081/250 combo, nice crtals, slighlty off-white, and vaped it at 400F, with no herbal additives. Noice little buzz with less of the mental numbing from the DP. This stuff was weighed right into the herb backet, since it's crystalline and it didn't fall through the mesh.
It vaped well, but I noticed there was a clear plastic-like resin on the bottom of the mesh where the crystals were previously. There was no smell from this at all.
Cut ahead about 6 hours and put another 5mg into a 25ml pyrex flask, hit it with a ligher just undermeath and enjoy the vapours once again. Similar buzz, and also notice the semi-opaque epoxy type gunk where the crystals were.
I think this is desirable, since I want to be able to vaporize and catch a buzz, and also leave the crap behind, just like with my pot. I don't know what the clear stuff is that gets left behind, but I'd rather it stayed away from by bronchii anyways. For the hell of it, I set the bic to the remaining stuff in the herb basket from earlier and noticed when it combusted it gave off a black smoke like burning plasic. Smelled like shite too!
So in conclusion. I think this jwh is a good candidate for vaporization, and I'm happy that the non-vaporized stuff stays out of my system. Has anyone else experimented with just vaping the crystals? I'm going to test vaping it a about 375F next, because the IO-Lite vaporizer is very appealing and I can bring it along when I visit friends. Of course, my DP will remain the sociable smoke of choice, but I do like the jwh too.