This is a beautiful set up. I am considering something very similar. How did you mount the top to the lid? Epoxy? Screwed down?
The lid? You mean the top which essentially is the lid. Well it's a piece of plywood built past the edges of the actual chest freezer top to allow mounting of the trim. That piece of wood is actually bolted to more wood we installed on the underside of the lid. We reinstalled the insulation around the new wood on the underside of the lid and re-installed the plastic weather stripping around the edges to keep the seal. Then we mounted "wonder board" to the top of the plywood on top and cut out the drip tray so when we installed the granite, everything stayed flush. The trick is, to keep the edges of the trip wood flush with the granite which in turn is also flush with the drip tray and coffin top.