Quote:
Originally Posted by G6fylneil
No/Load RPM.
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Sorry, still doesn't make sense to me - shouldn't there be a figure, eg 750 (rpm)? Why just N/L?
Also, if anyone can explain the best uses of the various speeds, ie, 500, 750rpm? Modern drills I think, are a lot faster.
Slower rpm's I think, heat the bit less, more torque? Faster can cut faster?
But not a lot of difference between 500 and 750, so why is 500 'slow'?