Originally Posted by colonel00
Have you considered an inverted conical shape? Not sure how this would affect the airflow but it seems logical that if the heat was in the middle and hit a downward pointing cone and then diffuse up towards the outside. Another thing might be to come up with a design where you can have two overlapping plates that could rotate to close to eliminate temp spikes when the lid is off. Are you using a CNC machine or something similar? I wish I had access to such toys. You can also send any "failed" attempts my way
This is the basic design for now. I'm going to keep it flat so you can place a water pan on it. I have a few fabrication toys but not a CNC.
This is water jet cut.