lefthand acme thread

lefthand acme thread

This topic has 26 replies, 9 voices, and was last updated 11 February 2020 at 22:50 by Pete Rimmer.

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11 February 2020 at 22:30 #451787
David George 1
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@davidgeorge1
That looks like a square thread not a Acme thread which has an angle on the flanks. I made a tap from silversteel hardened, a while ago for an M Type lathe cross slide lead screw and roughed out the nut with a single point square boring tool and finnished it with the tap.

David
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11 February 2020 at 22:50 #451788
Pete Rimmer
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@peterimmer30576
Trick of the light David. No-one who could turn such a thread is going to have a problem distinguishing ACME from square.
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