Hi Charles. Nothing in life is 100% accurate. Tolerances, limits and fits appear everywhere – see my opening sentence.
He is repairing an old pencil sharpener, not a micrometer, although even many of those have adjustable nuts !
My point was that it is possible to make the threads needed. Another job I did was for an adaptor for a digital camera, 40mm ID x 0.75mm pitch.
Needed to be more accurate and this was accomplished.
HTH
?????????? Ellis
?
?
?
Ellis:
?
However, that is not actually cutting the odd thread.? It is just cutting something close enough to be "good enough".? While t is a valid solution in many or most cases, it is not actually cutting the correct thread.