I've searched around the internet looking for information on the subject, but haven't been able to find any details. I am interested in a plug in vape of the hands free variety. I've been looking at the Da Buddha and Extreme Q. My question is, for these hands free models, can I leave the vape on and wand in for hours on end without combusting or any ill effects? I prefer to take a hit every 1/2 hour or so, and would rather not have to remove the wand every time. But if that means having to turn on and off every time, I wouldn't be too satisfied. Any input or recommendations would be appreciated.