[Twmaster]

I'm converting an old Sherline mill to CNC. Seems this example is old and does not have the three piece leadscrews like more modern versions. My lead screws are all one-piece. I'm using Sherline couplers so this needs to be tapered.

Do any of you folks know the angle? Or can somebody perhaps measure a spare rod on-hand? I can machine the taper and threads on the end. Just need the specs.

It's the end of the leadscrew as shown in this image circled in blue:



Thank you.