I have seen numerous recommendations as to safe and effective speeds for turning, from the decal on my old General lathe that prescribes speeds for large pieces lower than the original Reeves drive was capable of to "diameter in inches x rpm should equal 6000-9000" to "If the lathe isn't shaking and you aren't shaking everything is cool" to Stuart Batty talking about a rim speed of 40 mph (which is in the range of diameter x rpms =13,500 if my arithmetic is correct).
Obviously when roughing out one can't cut effectively with more than a little vibration. High speed is good for smooth cutting but potentially hazardous if anything launches. Subjective assessment of the soundness of the workpiece has to be a factor. How do all you folks approach this topic?
Obviously when roughing out one can't cut effectively with more than a little vibration. High speed is good for smooth cutting but potentially hazardous if anything launches. Subjective assessment of the soundness of the workpiece has to be a factor. How do all you folks approach this topic?
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