Nov 12 , 2018
Don’t Drill too Close to Edges
Two mistakes you really want to avoid are busting off a chunk of a concrete stair step and cracking the corner of a patio slab. To avoid these disasters, don’t drill any closer than 4 in. from the edge. If there’s no other option, turn off the hammering action on the drill. Also, avoid wedge-type anchors. They exert a ton of outward pressure, which could literally “wedge” the concrete apart.