Tapping Attachment
“With the tapping attachment, you feed in and retract—when you retract it automatically reverses the tap to bring it back out. If you have a workpiece with a lot of the same sized holes, you can have a big impact in reducing cycle time by using a self-reversing tapping attachment.”
TAPPING is a machining process for producing internal threads. A tap is a cylindrical or conical thread-cutting tool having threads of a desired form on the periphery. Combining rotary motion with axial motion, the tap cuts or forms the internal thread.