The foot is also solid slab with live edge. Started at 2 1/2” finished at 1 15/16”. Made a sled and planed down with the of 2200(bags of to festool it’s an amazing machine).
In terms of movement the oak is attached only on one side to the granite. The foot is not pinned or glued at the floor. The foot lands in a tile grout joint ( large rustic tile with wide joint). I worked a fin into the bottom of the foot so it can slide in and out but not side to side.