Yup, and the first thing the kid learns from the senior class is that a #29
drill shank will defeat that safety switch nicely.



"John Ammeter" wrote in message
...


The drill press we had at work had a safety interlock that really worked.
You had to put the chuck key arm in a switch before the drill press could
be turned on. The chuck key arm would activate a momentary contact switch
in the circuit for the drill press... no chuck key in the switch, no drill
press operation...