14 inch hole in concrete

Core drilling 14 inch holes in a block concrete wall is not easy. The core drill bit in itself weighs close to 40 pounds and the rig, along with the core drill motor, adds to that weigh by a least another 60 pounds. So when core drilling on a wall you have to use more than just one concrete anchor to secure the rig to the wall so that the darn thing does not fall off while attempting to put the 14 inch hole in the concrete block wall