Richard J Kinch wrote:
Robert Swinney writes:
Not to worry re. the sharp V at the root. Grind a tiny radius on the V
point of your threading tool (theoretically 1/8 pitch) and that will
eliminate sharpness at the root.
1/8 pitch? Shouldn't the valleys be truncated by 1/4 P? 1/8 P is the
truncation of the peaks? That's how I understand _Machinery's Handbook_.
That's nuts.
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