This pilot pin or sometimes known as an ejector pin is an essential part of the Magnetic Drill Bit. The workpiece should be punched with a centre punch, this small indentation is where the pilot pin should be positioned to centre the bit. The Magnetic Drill Bit then cuts a thin strip of material around the pilot pin creating a perfect hole. The ejector pin is spring loaded and when the hole is cut the pin springs out and ejects the waste away from the workpiece. ProWeld advise using a cutting & tapping spray or fluid on the bit. This will speed-up the drilling but will also prolong the life of the Magnetic Drill Bit.
