This was just what I needed after a dual blade knife failed miserably. I had a hard time cutting through the plaster above the cement board over the drywall. Suggest a corded drill as you need to take your time and I had to reload my drill twice to get through my project (6 holes). It produces a lot of dust (which is to be expected). I sacrificed the football to be cut in half to create a dome around the cut area. This helped reduce the amount of dust and dirt that rained down on me. Be sure to wear a dust mask and safety goggles.