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Clearly the nut itself needed to be trued up, and here's the technique:
First, we take an appropriate chunk of roundbar out of the junk bin, and turn a short
stud of new threads on the end. Make sure the roundbar you select is big enough that once
you turn the threads, you have a fair "shoulder" to tighten the nut up against.
Use care, and make the threads fit nice and snug. I don't recommend using
things like tailstock die holders or even dies in general, for this.
You want to make the threads as square to the headstock as possible.





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Information contained in these pages is for reference and entertainment purposes only.  Our methods are not always the best,
quickest, safest, or even the correct ones. It's up to you to know how to use your own machines and tools.
Keep your fingers away from the spinny blades o' death and you should be all right.