The drill bits that are frequently used for brick, concrete, metal and stone are diamond bits. These are very specialized types of drill bits, and most people don’t use them in their do-it-yourself projects at home. These are the metal drill bits of choice when larger holes are required, such as for a manhole. The metal drill bits are made of cylinders that have soft steel mounts on arbors with industrial diamonds embedded at the openings.
Diamond drill bits have segments that are actually thicker than the cylinder walls, which keeps the larger portion from rubbing against the hole being created. These drill bits also have sloped slots to remove dust. They can be used either wet or dry, and there are customer diamond bits for many different jobs.
The material and its thickness will determine what diamond drill bits are right. As with any other drill bits, the diamond bits will last longer and provide better results if the user always follows the manufacturers’ directions. It’s also important to only use the drill bits that are intended for specific materials. Metal drill bits should not be used to drill into brick or stone, for example.
The biggest advantage of using diamonds for drill bits, besides the fact that it can drill through practically anything, is that there will be minimal chipping, faster drilling, less noise, and less material loss. Those are some big advantages, as anyone who uses a metal core drill or any other drilling apparatus should know.