In article , Grant Erwin says...

SteveF wrote:
.. in practice can this be done with enough accuracy for something
like a replacement lead screw for a lathe?

No.

LOL. The real long answer is, the task will be so time-consuming, and
the outcome so uncertain, that you are better off doing it another
way. Borrow a larger lathe. Purchase the lead screw and fit to
your machine. etc.

Short answer though is correct. Umm, not really. No. Also
you did not specify any kind of lead accuracy tolerance on your
requirement. A lot depends on that. If the tolerance is
"it's gotta be the right number of tpi," then the answer could
be yes.

If you need ten microinch lead tolerance over the entire thing,
then definitely no.

The truth lies somewhere in between.

Jim


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