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best machine tools for lathe

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Martin Newbold11/03/2018 11:01:37
415 forum posts
240 photos

I have been looking at the diverse collection of lathe tools and only have experience of the my ford carbon tipped tools. I note there are Chinese makers making Osrom or something similar and there are also indexable carbide inserts. does anyone have any experience in using these tools of different type and what are you using now and why please?

Muzzer11/03/2018 11:28:22
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2904 forum posts
448 photos

Indexable inserts have been debated / discussed here ad nauseam and beyond. What's this about "Osrom"? Perhaps you could post a link - unless this is to turn into another of those quiz threads. Not aware of "carbon tipped" tools either - perhaps I'm missing something.

Murray

John Haine11/03/2018 11:30:04
2693 forum posts
138 photos

Do you mean Myford carbide tipped? I can't see any on their website?

There are several places selling brazed carbide tipped tools. The best advice I can give is to avoid them at all costs as generally the quality is poor, you will soon chip one, and then its junk unless you have a grinding wheel that will cope. Even then it's hit and miss.

Indexable carbide tools are a very different kettle of fish. There are lots of suppliers to the hobby, quite a lot of discussion here. I can recommend JB Cutting Tools and Greenwood Tools, I've bought from both and the tools have been/are good. You buy a holder and inserts that generally have multiple cutting edges, as one wears you turn the insert round to select another. Widely used in industry - in fact the default nowadays. There has been a view that they don't work well with our small lathes, but I find them fine with my Super 7. But search on here for other views. My go-to tools use rhombic 80 degree inserts, I have holders for RH and LH knife and boring, and also one that lets you use the 100 degree corners for roughing.

I can also recommend the Diamond Tool Holder from Eccentric Engineering - see advert/link to the right. These use a 1/4" HSS square bit but have only one face to sharpen. Give very good finish and can take large cuts.

Alan Wilkinson 111/03/2018 12:04:42
31 forum posts

For me Sandvik are the inserts to use but you do need to up your speed especialy when screwing, And on the less powerful lathes make sure you get positive rake inserts, Industry uses negative rake but they have the power to push off the metal. So Sandvik positive rake works fine on my Myford 7

Alan

mechman4811/03/2018 12:58:26
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2518 forum posts
377 photos

I have a various assortment of cutting tools, insert tip, tangential tool from Eccentric Eng. HSS set from ArcEuro etc... ( usual disclaimer ) Left & right hand insert holders plus boring bars. I tend to use the tangential tool most of the time as it deal with all metals satisfactorily, except cast iron for which I have a couple of brazed carbide tip tools.

George.

Vic11/03/2018 14:19:19
2330 forum posts
12 photos
Posted by mechman48 on 11/03/2018 12:58:26:

I have a various assortment of cutting tools, insert tip, tangential tool from Eccentric Eng. HSS set from ArcEuro etc... ( usual disclaimer ) Left & right hand insert holders plus boring bars. I tend to use the tangential tool most of the time as it deal with all metals satisfactorily, except cast iron for which I have a couple of brazed carbide tip tools.

George.

I’m pretty much the same. I really like the Tangential tool I made but also use insert tooling from JB.

**LINK**

Mick B111/03/2018 14:21:29
1241 forum posts
70 photos
For most of what I do, 1/4" square HSS provides a very good basis for offhand- ground tools of whatever form is useful for the turning I'm doing. Once you've understood rake and clearance angles you can grind knife, grooving, threading and many special- purpose form tools just as you want. I do have a couple of carbide inserts tools for roughing and more difficult materials.
John Haine11/03/2018 17:48:37
2693 forum posts
138 photos

By the way, a "machine tool" is normally understood to be one where power is used to move a tool against a workpiece or vice-versa. So my first reading of your thread title was "what machine tool would I fit in a lathe" to which the only answers I know are a milling spindle or a toolpost grinder. Sorry to be pedantic...

FMES11/03/2018 18:09:01
602 forum posts
2 photos
Posted by John Haine on 11/03/2018 17:48:37:

By the way, a "machine tool" is normally understood to be one where power is used to move a tool against a workpiece or vice-versa. So my first reading of your thread title was "what machine tool would I fit in a lathe" to which the only answers I know are a milling spindle or a toolpost grinder. Sorry to be pedantic...

Thats why its good to always read the rest of the post, does save some embarrasment.

From one who speaks from experience

Regards

Lofty

Neil Wyatt11/03/2018 20:04:36
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Moderator
16740 forum posts
689 photos
76 articles

Most carbide tipped tools are supplied as unground blanks.

Most suppliers don't state this.

Most purchasers don't realise this.

Hence most users think they are crap because they are trying to cut using tools with negative front clearance, which is like trying to thread a rope through a needle...

Neil

richardandtracy11/03/2018 21:41:55
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938 forum posts
10 photos

I have recently started to use ccmt0602 tools for boring & turning, they are very cheap direct from China. They are blinking expensive from UK suppliers in comparison. £3 inc postage was the best price I had for a boring bar. The cutting speeds and feeds are a fair improvement over my 15yo triangular inserts with an improved finish. The latest insert shapes are definitely an improvement on the previous generation.

Regards

Richard

David Taylor12/03/2018 04:32:27
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128 forum posts
39 photos

I bought a tangential tool holder but never really got enthusiastic about it. The upside down parting tool holder on the other hand, I love it. I recommend it if your chuck doesn't screw on.

I used HSS tools for at least 5 years (and continue to use them mostly) and only bought a set of carbide tips late last year. My lathe might be strong enough for them but I do hear the motor slowing down when I use a decent depth of cut and high speed where I assume there is less torque available. But the finish is pretty ordinary if you use them like you would HSS.

Grinding a HSS tool that cuts isn't that hard. Perhaps grinding one that gives the finish you want isn't quite so easy. I'm a very unskilled amateur and seem to be getting away with it.

not done it yet12/03/2018 11:14:38
3556 forum posts
15 photos
Posted by David Taylor on 12/03/2018 04:32:27:

... The upside down parting tool holder on the other hand, I love it. I recommend it if your chuck doesn't screw on.

...

Unless one can cut from the other side, of course?

Russell Eberhardt12/03/2018 11:19:03
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2497 forum posts
85 photos
Posted by Martin Newbold on 11/03/2018 11:01:37:

my ford carbon tipped tools.

Not come across these but, as the only form of carbon hard enough would be diamond I guess they are rather expensive wink

Russell

Vic12/03/2018 11:28:33
2330 forum posts
12 photos
Posted by David Taylor on 12/03/2018 04:32:27:

I bought a tangential tool holder but never really got enthusiastic about it.

That’s unusual, not heard anyone on here before that didn’t like theirs. I wonder why, have you got the top angle correct?

Jon Gibbs12/03/2018 11:48:47
738 forum posts

Plenty of conventional right hand turning insert holders, boring bars and inserts (CCMT 060204) are available on banggood's website (**LINK**) very cheaply (rather bizarrely under electronics/mechanical parts!) but for anything out of the ordinary like left-hand tooling or holders that use the 100 degree corner then you'll have to pay UK prices from someone like ARC or RDG.

I now tend to rough out with cheap TCT and then turn to a finish with M42 HSS either a normal toolbit or a shop-made tangential holder with M42 HSS. This combo works well for me on mild steel or stainless.

HTH

Jon

not done it yet12/03/2018 12:16:04
3556 forum posts
15 photos

Only buy banggood if you can afford to throw them away if they turn out to be rubbish. Cutting tools are not too bad a risk but taking a chance on morse taper tooling might be very expensive if, as I found (before it actually damaged the Morse socket), the taper was not a recognised Morse angle - it rattled!

Their customer service was about zero on a scale of 0-100, too.

richardandtracy12/03/2018 12:19:57
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938 forum posts
10 photos

LH CCMT0602 holder (SCLCL1010H06) for approx. £6.09 inc post: **LINK**

Centre tool position SCMCN1010H06 (inc insert) for £4.99 inc post : **LINK**

Those are 2 sales I've actually bought from, and they took about 2 weeks to delivery. I use cskwin2015 for a fair few of my tools. Seems to have some better prices than Banggood and more logical naming structure. However, to get the best prices it's always a case of looking for the right thing at the right time (like Aldi).

Regards,

Richard

jimmy b12/03/2018 13:24:54
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537 forum posts
29 photos
Posted by richardandtracy on 12/03/2018 12:19:57:

LH CCMT0602 holder (SCLCL1010H06) for approx. £6.09 inc post: **LINK**

Centre tool position SCMCN1010H06 (inc insert) for £4.99 inc post : **LINK**

Those are 2 sales I've actually bought from, and they took about 2 weeks to delivery. I use cskwin2015 for a fair few of my tools. Seems to have some better prices than Banggood and more logical naming structure. However, to get the best prices it's always a case of looking for the right thing at the right time (like Aldi).

Regards,

Richard

I couldn't agree more, I've bought from this Ebay seller, (and plenty of others), everything has been very good.

Jim

Vic12/03/2018 14:15:56
2330 forum posts
12 photos

Posted by mechman48 on 11/03/2018 12:58:26:

I tend to use the tangential tool most of the time as it deal with all metals satisfactorily, except cast iron for which I have a couple of brazed carbide tip tools.


George.

I forgot to add, someone gave me some broken solid carbide 1/4 end mills which fit perfectly into the Eccentric Engineering Tangential tool. Ground to the correct top rake it will happily take the hard skin off cast iron and can easily be reground if the edge dulls. Just a thought if you happen across some used carbide of the right size!

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