Help a noob

[Sam Iveson 1Participant @samiveson1]

Posted by Christian Sprog� on 28/04/2017 08:31:11:
The cj18a goes down to 50rpm, is that not low enough for threads godt?

It looks as though I'm a little late to answer your question here however for the benefit of anyone else reading this here goes!

I have a CJ18A lathe that I geared down to increase the torque which is really the big problem I found on the small lathe at low speeds. Even the lightest of cuts seem to quite happily stall the lathe at low RPM. Obviously a smaller diameter thread will pose less of a problem than a larger one.

One of the first things I ever made on the lathe was an expanding mandrel to allow me to attach a hand crank onto the spindle out the rear of the machine. This helped massively when turning a thread into a small relief groove up to a shoulder (because a) the lathe kept stalling and b) when it didn't it kept crashing into the shoulder).

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