I have an Enco 1024 which is just like that Jet. they also made a Jet 12x24 (and Enco).
Quite a few of those around. taiwanese, and they have the 2nd feed shaft, plus a true QCGB. It's a real lathe.
Be careful buying any new lathe under 12" swing. I haven't seen one that has a true QCGB. I was about to buy an 11" PM when I found out what looks like a QCGB is really some sort of hybrid that uses change gears. Deal-killer for me.
I'd be looking at the G4002 or G4003 Grizzly.
Sounds like solid advice.
There are several things to like about the 4002/3, but a couple things are very troubling to me. The first two may be show-stoppers
One is a top speed of 1400 RPM. That is not fast enough for turning aluminum or for using carbide tooling.
Another is that some gear changes are still required. That in itself is not a problem other than it requires access to the gearbox on the left, just like other gear-change machines. This adds 18" to the operating footprint of the lathe. Unless I put it on casters, which I hesitate to do with a half-ton lathe. And the lathe is already 53" long, which is at my upper limit even without the extra 18" access requirement.
And a pet annoyance is that it cannot turn an 11.5 TPI (garden hose) thread.
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Keith