Hey guys, great to hear from you that have received your ThermoVapes, you can imagine we are thrilled you are enjoying your device!
About the holes in the bowl and their size. I have a couple of thoughts...
First, the upside of the The ThermoVape being a convection vaporizer is that all the airflow is completely driven through the entire length of the heating core, it comes in below core and exits at the bowl. So you actually have a lot of airflow, and velocity of that airflow, pushing small particles in the opposite direction, i.e. away from the inside of the heating core.
Second. The ThermoVape is self cleaning, if you were concerned there were some small particles in the heater core, simply give the device a dry run, meaning, with an empty bowl, turn the device on and give it a 20 second cycle (this is a hot burn, you will NOT be inhaling, just holding the device on), any small particles in the core will be vaporized/incinerated.
In our beta testing this was never an issue. We had no problems with particles in the heating core. Although we do not recommend grinding the herb to a powder, a course grind seems to would extremely well.
Thank you all for your early support and feedback. We take all of your comments seriously and they spark a lot of discussion (and debate) here at ThermoVape. We are doing our very best to make the best portable convection vaporizer on the planet. Your help in that endeavor is much appreciated.