Need to cut a round hole in some indian stone paving to house a gully grate (approx 10" hole required).
I was thinking of doing it in 2 halves and first slicing at 1" spacing from the edge to the perimiter (4.5" grinder) and then slicing at right angles to remove the bulk, then nibbling from the inside of the semi-circle and cleaning up with a sharp chisel and/or bolster.
But has anyone got a better way of doing this?
TIA,
Alex.