Gene Heskett wrote: > > > Humm, now that you mention that, I read something similar on the net a few > years agom from somebody at Gecko. Could have been the same person I'd > have to assume. > > Mariss is the designer and owner of Gecko, and an awesome engineer. > Which is 17 amps more than my lathe spindle has. I wonder if that could > make me a REAL variable speed spindle. This one runs out of steam when the > steel is above 5/8" in diameter. Supposedly a 250 watt motor, older 7zx12. > I'd like to take it up to shaving 1.75" to 2" stock. Could that reverse > w/o needing to toggle a 4pdt relay? > > Yes. I use one of my servo amps to run the spindle of my minimill, and it does reversing under computer control when rigid tapping. If you have some kind of spindle speed sensing or spindle encoder, then you could have closed- loop spindle speed control.
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