There is no reason why it has to be a 'single-point' cutting tool

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This article definitely needs improvement. Senior writers and moderators please see that a dialog box mentioning the need for improvement is displayed. Even though I am a mechanical engineer, I feel I need more knowledge about this subject in order to add content. Let others contribute. Icestorm6 (talk) 17:33, 25 June 2019 (UTC)Reply