I bought this vape about a year or so ago for a friend who lives out of state as a birthday present, just based on ebay feedback. It was like $80 at the time, "won" as an auction item.
We both had high hopes but it didn't work out for him and he ended up selling it, which I think stalled his career as a vaporist.
Because there's no screen he kept drawing the material into his mouth - I kinda get that he didn't have the technique down, but out of curiousity we 3 way'd a phone call to the builder or whoever answered the phone, to pick his brain regarding how the thing is supposed to work.
He vaguely explained that as time goes on the resin builds up and prevents the weed from being drawn into your mouth. Certainly this bit of info did not impress me, and the person who answered the phone really didn't seem all that savvy about vaporzing in general compared with the exchanges I read on this board. On the other hand maybe the builder is on to something - it's a very narrow wand and that supposedly would prevent the material from being drawn into your mouth, at least that's the principle.
On the other hand I see tremendous and consistent positive feedback for this KIA vaporizer, however I've never used it - I'm sure I would be able to figure out how to use it properly but it's not something I would recommend.