A hole saw attached to a standard drill provides a quick and precise method for cutting circular openings. For non-circular or custom openings, a metal nibbler or a rotary tool with a specialized cutting bit can be used. However, it's essential to understand the implications and potential risks involved. The nibbler mechanically takes small bites out of the metal, offering greater. Are you tired of drilling sloppy holes in electrical boxes? Learn the secret to drilling perfect holes every time! In this video, we'll show you a simple and easy-to-follow technique to ensure accurate and precise holes in electrical boxes. Interior receptacle is in a metal single gang box which is nailed to the stud, and the box has knock outs and clamps along the top and bottom, which. The only mounting holes currently in the junction box are in the bottom of the box- there are none on its sides. Here are some commonly used methods: 1. You need to clamp the drill bit of.