Name: IMG_20170813_193507.jpg Date: 2017 Aug 13 Size: 0.80MB ---------------- Poke the holes and awl or prick punch or sharp nail to carefully locate the center of the X's. Followed by a heaver conical punch to form a divot at least as wide as the drill you are using. In this case the stub of carriage bolt ground to a point makes a fine divot maker.