I am building an outdoor kitchen that will have a thick stone top and I want to build in a large egg. I have found the plans for the wooden egg table that calls for a 21" circular hole and requires the egg to be supported from underneath, but this appears to leave a visible gap between the edge of the egg and the countertop.[p]My first question is whether I can hang the Egg from the countertop by cutting a circular hole that is slightly smaller than the maximum circumference of the egg, or whether the egg should not be installed in this way and must be supported from underneath. While the countertop is plenty strong to support the egg, I didn’t know what size hole to cut, whether to use any gasketing material, and whether thermal expansion would cause the egg or the countertop to crack if I mounted it like this. [p]If this doesn't work, does anyone know of any trim or gasketing material you can recommend to finish out (and keep water out of ) the space between the grill and the countertop opening? I am shooting for a very polished, professional looking built-in installation with no gaps and no water leaks. Should I be looking at a hole slightly smaller than 21" to reduce the size of the gaps? [p]Is there anything else I need to watch out for?