I have had my Sherline lathe and mill for more than 15 years now
and they are still "dialed"
Of the micro lathes, Sam is correct, Sherline is probably the best.
Or Taig, maybe. I haven’t personally used either one.
I first cut a punch on a Southbend when I was about 17 - that’s
about 1969. But I am NOT a lathe expert, I just have some experience
with them. And I still have that punch and I think this thread is
useful, too.
Goo says that you can pick up used lathes of better quality and yes,
you can. Jo-Ann was at an estate sale and they had a Southbend and a
Bridgeport mill to match for $150 each. They were covered with
talcum powder because the guy was cutting alabaster, but that’s not
really harmful She can home and said, “I didn’t buy them because I
didn’t know if they were any good.” And of course they were sold
when we went back. Seems it’s always the other guy, and there are
lots of lathes out there but not so many under 12 inch swing. But if
you can find one and get one, then Goo’s is good advise.
As long as you have a reasonably machine - I’d put Sherline in that
category - you can do work, it’s just what work and how easy/hard it
is to do. It’s the little flexsharft things and others that are
mostly just a little silly.
But lathes are about two things - rigidity and features. Rigidity is
that property of machine tools that makes them stay put in every
way. If you try to cut titanium on a Sherline, it will more or less
flex (we call it spaghetti), because the frame and the whole machine
isn’t “stout” Do that on a big time machining center and the only
thing that’s going to give is the metal being cut. That machine
isn’t going anyplace. My lathe is 385 pounds - what many might call
a “real” lathe will clock in at 1000 and much more. That isn’t just
because they are overbuilt, it’s because of rigidity. A 24 pound
lathe (Sherline) will certainly do work, but you’re not going to
rebuild any transmissions with it. {joke…}
The little lathes have a lead screw that moves the carriage. What
you have to do it crank that sucker hundreds of times, and there’s
no power feed, either. Bigger lathes have a rack and a wheel that
move the carriage quickly, to anywhere, and then the lead screw is
engaged only for the power feed or for cutting threads. Those small
lathes take 1/4" tooling, which is to scale for the machine, but all
you can get are high speed steel and brazed carbide. My lathe has a
quick change toolpost and half inch tooling with indexables all
around. I can use anything smaller, too. You just can’t do that on
the micro lathes. I have longitudinal power feed but not on the
crossslide, which is a feature of larger lathes. I have a gearbox
for thread cutting. Otherwise you need to use change gears, which is
a real PITA. Mi lathe was around $1500 new with shipping and a stand
and tax. Not so bad…
Just some rundown on what lathes are about. I cut stainless steel
wedding bands, when I want, pretty much effortlessly. I’ll offer a
VERY usefultidbit: Southbend long ago published a little booklet
called “How to Run a Lathe”. It’s still available, it’s cheap, and
it gives you a complete rundown on what everything’s about from a
beginner level. Kind of must-reading for a newbie…