Stephen Wille Padnos wrote: > > > You do want to turn the motor power off at some point, but deciding when > is difficult. Consider a person whose hand is caight between a tool > (not spinning - no need to be gross here) and a vise. What you want is > for the pressure on the hand to go away - ie, stop powering the motor > into the hand. But, you want to be able to drive the axis back a little > manually, which can't be done if the drive is still commanding a stop > (or hold). > > Yup, I did that once. Luckily, I had removed the tool from the boring head, so it was a big flat surface. But, it pinched several fingers between the boring head and the top of the vise. I sat there for a moment, trying to decide if the machine or software had malfunctioned, and I should E-stop and wind the quill up by hand, or just hit the right button this time. I decided it was human error, carefully hit the "Page Up" button and got my hand out of there. Those fingers were sore for a few days.
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