Can be done Fred Flintstone style with a 12" long, 1/2 or 5/8" diameter, hand held, steel STAR drill, and a 2 1/2-lb mason's hammer. Simply whack away and turn the star drill a wee bit with every whack-whack-whack...... Fred Flintstone style ...... this really works in gray NH granite .... yabba-dabba-doo!
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... down and out, liv'n that Walmart side of the lake!
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