How Do You Countersink Bolts In Metal?
Creating a countersink in a metal plate allows a fastener with a conical countersink head to rest flush with the surface of the metal. Countersink holes require heavy gauge metal that is thick enough to hold the head of the bolt flush with the metal’s surface and provide the strength to hold the plate in place. Thinner sheet metal requires a dimpling tool to create the recess, and you will then need to provide a countersink in the base material located behind the metal sheet. This is a different process from performing a true countersink in a metal plate. Set the point of the center punch on the location that you require the countersink hole. Strike the center punch with the hammer to create a recess on the surface of the metal. The recess will hold the drill bit in place during the process of drilling the hole into the metal plate. Secure the drill bit sized to the fastener threads into the drill. Liberally apply tapping fluid onto the drill bit. Place the tip of the drill bit into th
