mmenzie
My friends call me "Menz"
This thing gives nothing (practically nothing, tufts of tiny farts even when shotgunned out the reverse side)all the way to 430F, that's not a good sign, but I wanted to try several ways of getting the vape to work before making a stink about it.
i don't believe this is an accurate way to tell if this works and here is my reasoning for thinking that. after many test of my own, i know if the puck (packed herb in the bowl) raises off the bottom of the bowl up to the glass screen vapor production diminishes till non existent. once pushed back down to the bottom of the bowl, vapor production returns.
SOOOOO..... if you are blowing through the grill it will push the puck to top of the bowl and vapor production will stop and nothing will blow out the other end. and believe me.... it does not take too much force (or suction from the mouthpiece) to raise the puck off the bottom of the bowl.
just my