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1- Grooving on the Lathe - Overview
Grooving (and other form-cutting processes) is one of the more complicated operations performed on the engine lathe. The cutting of grooves often requires high levels of precision, and a "feel" for the machine.
Although theory dictates a method of selection of the correct speed and feed, sometimes practice and experience will make the job much easier.

A groove is the location of an indentation in the part. This indentation can be square, round or angular in the shape. The function of a groove is usually to allow room for a fitting part, such as a rubber O-ring. It could also be the place where another part fits into this part. Grooves also provide a relief in the back side of a thread where the thread terminates.

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