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No. 1 - Cutting Keyways - 1941

A metal working industrial tutorial on how to create keyways. Keyways are important in locking gears to shafts, so they are not able to turn independently from each other, under load. The feed and speed section is something a lot of people look for - because most of the charts are set up for skinny round milling cutters, not those big side-milling cutters. This film covers how to cut a specified keyway using a side tooth milling cutter on a horizontal milling machine. It shows one way to hold a round shaft, how to calculate the proper cutter feed and speed using a 5" cutter, and how to align and make the cut. This film is part of a series of Defense Department films for training machinists in preparation for World War 2. The technique and care that they demonstrate in the work is still important to appreciate today.