Quick change tool post

[NortonDommi]

One thing is do is to use insert tooling that was meant for larger lathes and cut the dovetail directly in the tool holder the put an adjuster in it. Two reasons for that I have a lot of these kind of inserts because I got a lot them from vendors and in purchases on e bay.

I reckon you get greater rigidity as well through being one piece and bringing the work point closer to the centerline of the toolpost

 

[marka]

Howdy,

Bit of a blast from the past topic, but...

Looking at getting a qctp for a 7x10 HF mini-lathe. I was initially thinking 0xA, but wasn't sure if I'd be better off with the horizontal blade holder or the standard angled one.

But then I started thinking... I also have a 9" SouthBend that I will eventually get running. It would be nice to have the same toolpost on either lathe, so that the toolholders themselves can swap back and forth.

Is there a difference between the minimum tool height on an AXA qctp/holders vs. the 0xA? Basically, I'm wondering if the AXA would work on the 7x10 lathe. Alternatively, will I have any issues getting the tool high enough on the 9" Southbend if I'm using a 0xA qctp there?

Thanks!
Mark

 

[twhite]

OXA

 

[SouthernChap]

Howdy,

Bit of a blast from the past topic, but...

Looking at getting a qctp for a 7x10 HF mini-lathe. I was initially thinking 0xA, but wasn't sure if I'd be better off with the horizontal blade holder or the standard angled one.

But then I started thinking... I also have a 9" SouthBend that I will eventually get running. It would be nice to have the same toolpost on either lathe, so that the toolholders themselves can swap back and forth.

Is there a difference between the minimum tool height on an AXA qctp/holders vs. the 0xA? Basically, I'm wondering if the AXA would work on the 7x10 lathe. Alternatively, will I have any issues getting the tool high enough on the 9" Southbend if I'm using a 0xA qctp there?

Thanks!
Mark

You can generally shim up either the tool in the holder, or shim up the toolpost on a QCTP that's on the small size for a larger lathe.

It's harder getting a QCTP that's too big to get tools low enough on a smaller lathe.

 

[DAT510]

OXA



AXA

 

[dabear3428]

Rigidity has nothing to do with it, I have left the lock loose accidently and there is no chatter, only inaccuracy; bottom line, the wedge type is not more rigid than the piston type, it is only more accurate in terms of repeatability.

the wedge type pulls the holder down so helps with repeatability, 0XA is the size you need and a lot of the lathes 7X? will accept it with just replacing the bolt for a longer version that came with my kit YMMV.
IMO 0XA wedge type but pull your 4-way off and make sure it does not have a centering ring protruding above the compound deck.

 

[ChazzC]

I have the LMS 0XA with the horizontal cutoff holder on my 7x16.

You are being redirected...

You can use up to a 1/2” HSS bit (just), but I’ve found that some insert holders need some material milled off the bottom to fit. I use mostly 3/8 holders & HSS bits.

For use on the 9” you just need to add a block to raise the QCTP to height.

 

[mickri]

Or you could make a Norman style QCTP and you will have no trouble adjusting the height on the tool holders. Fraction of the cost too.