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Lathe Biz added picture

Posted: Tue Jul 09, 2024 5:54 pm
by Tim Jackson
I am fixing to look at a Southbend Lathe.

Southbend model 10 K Lathe 4 1/2’ bed m W Taper Attachment. 3 & 4 jaw chucks. Runs as it should. Single phase. $2100

Can anyone comment on this? I have a small Atlas/Craftsman 101. I have always wanted to step up. I mainly just want to dabble. I want to make some small cannons and maybe some mouthpiece experiments.

Thanks for any comments.
Tim

Re: Lathe Biz

Posted: Wed Jul 10, 2024 12:09 am
by TxTx
I have one that belonged to my father, made about 1960 or so. Prior to that he had a 6” Atlas that was made about 1980. The SB is a nicer and way more capable machine. I recall him remarking how much stiffer and more precise the SB was. He had been a little concerned with doing precise work on the larger machine but found it was totally not a problem. I never did anything precise on the Atlas - toy cannons and model rocket nose cones - but have done a fair amount of work on my SB and about the same machine in college and found them great to work with. Trickiest thing I’ve done was make a replacement valve cap for my 1928 Martin Eb. Female 64 pitch thread and knurling.

Mine has a quick change gearbox which is a nice feature if you do much in the way of threading, but not all of them have this. Mine also has power cross feed - they all may - which is nice. The taper attachment is pretty straightforward to use - there’s a screw you have to take out of the compound rest to disengage it from the crossfeed. This machine also has a removable gap but it’s never been out in the 30 odd years leve had it. A quick change tool post would be nice to have. Mine has a shop-made “slow chance” one that works with half-inch cutters, and a bought a lantern type to use some other cutters I have. I’ve also had a couple times when a steady rest or follower rest would be nice to have but don’t have those. We

The machine I have has the rear mounted flat belt drive which works fine but takes up a good bit of room. There are some cabinet version of them that would be more compact. Some of these have a v-belt drive that requires removal of the spindle to change the belt. One of these days I need to relocate the machine to a smaller shop where the more compact cabinet version would be nice.

Depending in where in the country you are $2100 seems reasonable if it is in good shape. They seem to be a little less up in the NE and rustbelt vs here in Texas.

If it is in good shape think you’ll likely be happy with it vs the Atlas.

Eric

Re: Lathe Biz

Posted: Wed Jul 10, 2024 12:10 am
by TxTx
This site has a ton of info. You may know of it already.

https://lathes.co.uk/#gsc.tab=0

Eric

Re: Lathe Biz

Posted: Sat Jul 13, 2024 4:05 pm
by Tim Jackson
Thank you so much, Eric. This is just the info I needed. I got a look today. It's in great
condition and owned by a retired engineer who takes very good care of things.

10" South Bend with a 4.5 bed. This is my chance to have a really nice lathe. I spent the summer after my freshman year working in my brother-in-law's wheel factory. I ran an automatic lathe during the day but they gave me the keys so I could open up the front shop in the evenings and teach myself on the BIG lathes. Very cool times for a young fellow.

Tim

Re: Lathe Biz

Posted: Sat Jul 13, 2024 8:28 pm
by Kingconn
The 10K will allow the use of a collet closer which is so nice for holding thin tubing and parts. I've worked in a machine shops for 35 years and very seldom used taper attachments. Most tapers I have cut were short enough to do using the compound or off setting the tail stock between centers. South bend is really a nice machine, if it has the quick change gearbox it will have a very good selection of threads.

Re: Lathe Biz

Posted: Sun Jul 14, 2024 12:47 am
by TxTx
Tim Jackson wrote: Sat Jul 13, 2024 4:05 pm Thank you so much, Eric. This is just the info I needed. I got a look today. It's in great condition and owned by a retired engineer who takes very good care of things.

10" South Bend with a 4.5 bed. This is my chance to have a really nice lathe. I spent the summer after my freshman year working in my brother-in-law's wheel factory. I ran an automatic lathe during the day but they gave me the keys so I could open up the front shop in the evenings and teach myself on the BIG lathes. Very cool times for a young fellow.

Tim
That’s very similar to the one I have - same rear drive and quick change gearbox. Nice looking machine. I am sure you’ll get some good out of it.

Biggest lathe I ever used was in one of our labs at work. We needed to make a tool to make a composite duct for a ducted rotor, which we turned out of a 14” long cylinder of mdf we glued up. Think it was about 26” in diameter, and the size of the lathe we had access to influenced our design.

Fun fact - mdf will “creep” and expand a little after it is cut inside of its pressed surfaces. So our tooled surface wanted to have little bulges every 3/4”. We got it to stop doing that by lacquering or using polyurethane on the machined surface, letting that soak in and dry, then machining it to the final size. Be a good way to make a bell forming tool if you had a lathe big enough.

Eric