Yes. We suggest using pots/pans that are 8″ in diameter or less.
The smallest inside diameter of the chamber is at the very top and is 2.66″ or 67.6mm.
The thickness of the steel is just under 1mm.
Yes. The cafe has a silicone o-ring like a traditional moka pot.
Not yet, however I am working with the factory to evaluate different colors for the top surface. Making this option available will depend on whether the color/finish becomes damaged or discolored by heat.