how to drill holes in beach rocks (why? because then you could thread them onto a post in the ground and make those towering piles of rocks) Crafts Ideas, Gardens Sculpture, Beach Stones, Hole Drills, Drills Hole, Rivers Rocks, Beaches Stones, Cool Stuff, Beaches Rocks
How To Drill Small Beach Stones Dremel / hollow diamond-tipped coring bit / dremel collet nut that's the right diameter / small plastic container filled with water - put the stone in the water on top of a shim (so you don't drill through the container) / keep lifting the drill up and down this helps keep the bit and stone cool. / small beach stones take about 2 - 3 minutes.
Stone lamp made from beach rocks. Tutorial at Completely Coastal how to drill holes in the rocks