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VMC vs CNC Knee Mills

Bakerprecision

Plastic
Joined
Aug 20, 2022
Looks like you made a great score. Now, for the lathe??

have you got a saw? two votes for a roll-in
A roll-in is definitely on my list, but will likely not make the cut. Takes up a lot of space and they are $$$. I haven't decided on a size yet, but a horizontal bandsaw will likely be the choice.

Do you guys (and gals) have any suggestions for a 1440 lathe? I'm looking at a Kent RML-1440V (north of my $15k budget), but specs look good. I would like to stick with single phase if possible, and be 4-5hp. I would like to buy used if I can find something local, so there can be quite a bit of savings. New might be my only option unless I want to wait for an undetermined amount of time looking for a used machine with those specs.
 

kazlx

Hot Rolled
Joined
Nov 22, 2010
Location
Tustin, CA
A roll-in is definitely on my list, but will likely not make the cut. Takes up a lot of space and they are $$$. I haven't decided on a size yet, but a horizontal bandsaw will likely be the choice.

Do you guys (and gals) have any suggestions for a 1440 lathe? I'm looking at a Kent RML-1440V (north of my $15k budget), but specs look good. I would like to stick with single phase if possible, and be 4-5hp. I would like to buy used if I can find something local, so there can be quite a bit of savings. New might be my only option unless I want to wait for an undetermined amount of time looking for a used machine with those specs.


Personally I wouldn't buy a new lathe. There's plenty of really nice used lathes around that size. I had a Cadillac 1440 that was great. There are several Mori Seiki clones. Check out Greer Machinery if you want to look through a dealer. They sell Moris. But for your budget, you should easily be able to find a nice 1440 ish lathe.

The Haas should be a good machine. If you decide to upgrade down the road, you should be able to get most or all of your money back if you got a decent deal.
 

memphisjed

Stainless
Joined
Jan 21, 2019
Location
Memphis
A small scissor saw that flips up to vertical is more useful than a roll in. Everrit abrasive saw is best small footprint option imo.
 

EndlessWaltz

Cast Iron
Joined
Jun 18, 2016
Location
Midwest
I would go for a Leblond 15x54. Everywhere and you can get parts still for them quite easily. Light duty lathe but not chinese.
 

LOTT

Hot Rolled
Joined
Nov 28, 2016
A small scissor saw that flips up to vertical is more useful than a roll in. Everrit abrasive saw is best small footprint option imo.
Really? Have you used a Roll-In? Not trying to start an argument, just curious.

To the OP- does the TM-1 have a tool changer? It should be a good introductory drug. And definitely don't spend $15k on a manual lathe, you could spend a tenth of that and get a good machine out of a tech college.
 

Bakerprecision

Plastic
Joined
Aug 20, 2022
Really? Have you used a Roll-In? Not trying to start an argument, just curious.

To the OP- does the TM-1 have a tool changer? It should be a good introductory drug. And definitely don't spend $15k on a manual lathe, you could spend a tenth of that and get a good machine out of a tech college.
The TM-1 does have a tool changer. I definitely didn't want to spend $15k on a lathe. I just picked one up today. It's a used, clean, GMC 1440HD ($9k). It's a 6hp 3 phase. I'm now researching the phase perfect vs rotary phase debates...
 

Bakerprecision

Plastic
Joined
Aug 20, 2022
Alright guys, so I'm needing help deciding between a phase perfect and american rotary. It's for my lathe (6hp), so a 15hp rotary or 7.5hp phase perfect will do the job. Question is which one to go with? Price seems to be negligible between the ADX line and Enterprise line. Both will run $2500ish to my door.

Or I found some used 20hp and 30hp units locally, but these are overkill for just my lathe.
 

Garwood

Diamond
Joined
Oct 10, 2009
Location
Oregon
Alright guys, so I'm needing help deciding between a phase perfect and american rotary. It's for my lathe (6hp), so a 15hp rotary or 7.5hp phase perfect will do the job. Question is which one to go with? Price seems to be negligible between the ADX line and Enterprise line. Both will run $2500ish to my door.

Or I found some used 20hp and 30hp units locally, but these are overkill for just my lathe.

This is a manual lathe? Replace the start contactor with a quality VFD for about $600. Invertek works good.

$9k for a 1440 Chinese lathe? Yikes. I need to sell my shop off and retire.
 

Nmbmxer

Hot Rolled
Joined
Jun 22, 2008
Location
VA
I have a 25hp rotary in my garage, I’d get the larger rotary over a PP. I don’t really care for a VFD on a lathe compared to a mill where it is a lot more useful.

Once you have 3p power you can get nicer(cheaper) air compressors, saws, manual mills, grinders, etc that will all need 3p power. You can then buy all the cheap stuff at auction that Harry Homeowner can’t since he doesn’t have 3p.
 

Bakerprecision

Plastic
Joined
Aug 20, 2022
This is a manual lathe? Replace the start contactor with a quality VFD for about $600. Invertek works good.

$9k for a 1440 Chinese lathe? Yikes. I need to sell my shop off and retire.
Can't afford "new American" and I certainly didn't want to spend a lot of time fixing an "old American" machine.
 

Garwood

Diamond
Joined
Oct 10, 2009
Location
Oregon
didn't want to spend a lot of time fixing an "old American" machine.

Like what would need fixing??? It's GD manual lathe? Simplest thing there is.

You're going full speed ahead into this with a monster budget for what you're trying to accomplish. Ten grand will get a nice used VMC and a good manual lathe, a phase converter and tooling.

I just can't fathom spending what you have on the machines you've purchased. There's no possibility of a return. Not a chance.
 

LOTT

Hot Rolled
Joined
Nov 28, 2016
Alright guys, so I'm needing help deciding between a phase perfect and american rotary. It's for my lathe (6hp), so a 15hp rotary or 7.5hp phase perfect will do the job. Question is which one to go with? Price seems to be negligible between the ADX line and Enterprise line. Both will run $2500ish to my door.

Or I found some used 20hp and 30hp units locally, but these are overkill for just my lathe.
Well, I started with a $110 capacitor kit off ebay wired to a 15HP 3P motor that was a $30 junk yard find. It's still powering the wood shop, ten years later. So you can save about $2300 of that if so inclined.

But if money isn't an issue PP are nicer to have around, and don't burn as much power when idling.
 
Joined
Nov 19, 2007
Location
marysville ohio
Well, I started with a $110 capacitor kit off ebay wired to a 15HP 3P motor that was a $30 junk yard find. It's still powering the wood shop, ten years later. So you can save about $2300 of that if so inclined.

But if money isn't an issue PP are nicer to have around, and don't burn as much power when idling.
Before you buy a PP read about wheelie kings experience with his PP as posted here. No chance I will ever get one after reading that post. I have had an American Rotary RPC for about 10 years and it is flawless. I have recommended A R to 3 friends and they have had no trouble either.
 

LOTT

Hot Rolled
Joined
Nov 28, 2016
Before you buy a PP read about wheelie kings experience with his PP as posted here. No chance I will ever get one after reading that post. I have had an American Rotary RPC for about 10 years and it is flawless. I have recommended A R to 3 friends and they have had no trouble either.
In fairness to Phase Perfect, over the course of that thread WheelieKing has also had trouble with Haas, Brother, Orange Vise, Pierson Workholding, a couple banks and several employees....
 

Bakerprecision

Plastic
Joined
Aug 20, 2022
I'm intrigued by the VFD idea for my lathe, especially if I don't have to run a bunch of boxes for a rotary or PP, but I still don't understand what is involved in getting it wired up. Is there a good article or "how to guide"?

Is there a HP limitation with VFD's? The lathe I have is 6hp.
 
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memphisjed

Stainless
Joined
Jan 21, 2019
Location
Memphis
6 hp on single phase might be outside Vfd range. If they exist they will be expensive. 5 hp is generally the cut off in single phase.
 

Bakerprecision

Plastic
Joined
Aug 20, 2022
6 hp on single phase might be outside Vfd range. If they exist they will be expensive. 5 hp is generally the cut off in single phase.
That's my worry. I'm leaning towards an American Rotary 30hp unit to run both my lathe and TM1. I know the TM1 will run single phase, but if I'm doing a phase converter, then why not.
 








 
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