This is a small clip of the tap cycle leading to the part-off cycle on our Haas cnc lathe. We are making our threaded inserts for oil tanks and fuel sight gauges. This is a 1/8" pipe thread being rigid tapped. Notice the spindle/chuck going forward and then reversing when the tap is removed. It happens so smoothly and quickly on this machine that it's tough to see. We sell these bungs separately or in our fuel sight gauge kit.