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sorry guys thats an never ending Basic discusion, and i am realy sorry to say that, what has nothing to do with the Basic thread.
sorry again Thomas.
Back in the old days before CNC that old Bridgeport had a number of ratios, you selected the speed closest to what you required and got to work. Are you trying to tell me that all those jobs I did with manual mills and
lathes were compromised because I did not have the exact speed ratio available? Of course not, provided the surface speed is within 20% of the recommended for that material you can always find a feed that worked well.
Craig
Is there a particular reason you need really accurate speed? In most cases you just set the speed, often as fast as it will go, and leave it there. Who really
cares what speed it is?
Craig