Lathe Safety Chuck key Holder Lock out

[mklotz]

Folks seem to remember things longer if they learned it under embarrassing circumstances.

The old high school shop class method worked well. If you were caught with the key in the chuck and your hand not on it, you had to wear a chuck key on a rope around your neck for the next several classes. Often an oversized (and thus much heavier) key was used.

Of course, in the liberal, namby-pamby environment of today, this approach would be impossible.