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Miscellaneous balls-ups...

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andyf:
Yesterday, I needed to put an M10x1 LH thread on a short length of barstock. The first attempt had to be scrapped. I used the nut which the thread was intended to fit as a gauge, and though it would screw on, the threads were very rough and truncated.

 :doh:
                Then realisation dawned; I was trying to cut towards the chuck. Because the thread was LH, that meant the motor was running in reverse. So was the spindle, and in effect my threading tool was the wrong way up  :bang: :bang: . I'm surprised the results even resembled a thread. Things went a lot better when the cutting passes were made away from the chuck, with the motor and spindle rotating forwards.

Andy

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