We have a fireplace with irregular rustic stone. We will get hardwood floor installed.
Is there a tool to cut a notch in the stone so the hardwood floor can slide into it so there is no visible edge? Or are we stuck with the scribe method where the floor is cut to contour of stone and gap from floor to fireplace is filled with caulk?
I think you are stuck. The stones are probably mortared in at the floor and by undercutting them I would think the support would be removed. I know when they span a window or door a metal plate shaped like an "L" is put over the top like a header to support the stone. If you can find a local stone mason ask him.