Turning Archive 2007
>This response came from Technical Support at WHM WHEN I asked them the same question I asked on this site, namely whether to use the speed dial or the red button (e-stop) to start and stop my Powermatic 3520A during the normal course of turning:
"I use the e.stop as the on off switch for a couple of reasons. First, when it is in the off position, there is no chance of bumping the potentiometer and turning the late on. (that could be a bad thing). Second, because the inverter is so advanced, it will allow you to leave the dial at the desired rpm and turn the machine on and off with no damage. It ramps up the speed automatically. Both ways will work...but the e-stop is safer."