Originally Posted by jakejacobson
Yep, and with the three funnels I have used, one spire (hole in the middle) was raised too level with the rim of the bowl which had a negative impact on airflow. I have yet to see this defect on vortex bowls. Probably because they are mass manufactured in China by machine. Maybe I'm wrong about that, but consistent none the less.
vortexes are handmade, thats why the holes in the bowl vary, some will be high, and some will be low.