Lathe and milling cutters - seeking suggestions

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Lathe and milling cutters - seeking suggestions Wally 03-01-2008
Posted by Wally on March 1, 2008, 6:50 am
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I'd like to get some carbide tools for my 7x12 lathe and micro mill (Clarke
CL300M and CMD10 respectively). The lathe has a quick-change toolpost with
holders that will take 8mm tools, and the mill has collets up to 12mm.

Want something sharp that will take clean cuts and last well. The main
materials I chop up are brass, aluminium, and some steel. I also plan to do
stuff with plastics (POM and PEEK, mostly). I'm aware of the need to keep
tools for steel and plastics separate.

Having messed around with some carbide tips (just clamped in the toolpost),
I'm impressed with the way it cuts, so I'm thinking of getting a small set
of indexable carbide-tipped lathe tools (and a boring bar and parting off
tool). Similar for the mill - an indexable end mill, and maybe some carbide
slot drills.

I've been looking at the lathe tool sets on Chronos - seems that Glanz is at
the better quality end of their range. A set of six tools plus boring bar is
about 80ukp, 25-30 for a parting tool. End mills are about 30ukp, but I
can't see carbide slot drills (they have a set of 6 carbide end mills,
unknown make, for 50ukp).

Is Glanz a good make? Are the tips on these likely to suit the materials I
want to cut? There are two end mills - a 20mm with a single carbide tip, and
a 25mm with two tips - which is better, if any? Any suggestions for
alternative makes to consider, and maybe other suppliers in the UK?

Thanks in advance,

--
Wally
www.wally.myby.co.uk
Stress: You wake up screaming and realise you haven't fallen asleep yet.



Posted by Bob Minchin on March 1, 2008, 7:00 am
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Wally wrote:
> I'd like to get some carbide tools for my 7x12 lathe and micro mill (Clarke
> CL300M and CMD10 respectively). The lathe has a quick-change toolpost with
> holders that will take 8mm tools, and the mill has collets up to 12mm.
>
> Want something sharp that will take clean cuts and last well. The main
> materials I chop up are brass, aluminium, and some steel. I also plan to do
> stuff with plastics (POM and PEEK, mostly). I'm aware of the need to keep
> tools for steel and plastics separate.
>
> Having messed around with some carbide tips (just clamped in the toolpost),
> I'm impressed with the way it cuts, so I'm thinking of getting a small set
> of indexable carbide-tipped lathe tools (and a boring bar and parting off
> tool). Similar for the mill - an indexable end mill, and maybe some carbide
> slot drills.
>
> I've been looking at the lathe tool sets on Chronos - seems that Glanz is at
> the better quality end of their range. A set of six tools plus boring bar is
> about 80ukp, 25-30 for a parting tool. End mills are about 30ukp, but I
> can't see carbide slot drills (they have a set of 6 carbide end mills,
> unknown make, for 50ukp).
>
> Is Glanz a good make? Are the tips on these likely to suit the materials I
> want to cut? There are two end mills - a 20mm with a single carbide tip, and
> a 25mm with two tips - which is better, if any? Any suggestions for
> alternative makes to consider, and maybe other suppliers in the UK?
>
> Thanks in advance,
>
My advice would be to look at availability of surplus tips to fit
whichever brand of holder you end up with.
I bought stellram holders some years ago and the angle of the diamond
shaped tip is not widely used and so I'm confined to using genuine
Stellram tips. Not a problem and the tooling is good but I rarely see
cheap tips on ebay etc.

Greenwood set themselves up a while back supplying the model
engineer/smaller tool user. Don't know if they are still around but they
had a good reputation.

hth

Bob

Posted by Wally on March 1, 2008, 7:46 am
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Bob Minchin wrote:

> My advice would be to look at availability of surplus tips to fit
> whichever brand of holder you end up with.
> I bought stellram holders some years ago and the angle of the diamond
> shaped tip is not widely used and so I'm confined to using genuine
> Stellram tips. Not a problem and the tooling is good but I rarely see
> cheap tips on ebay etc.

Yep, good point. Chronos do spares for the Glanz cutters, although I'm not
sure how available they are elsewhere.


> Greenwood set themselves up a while back supplying the model
> engineer/smaller tool user. Don't know if they are still around but
> they had a good reputation.

I managed to find them, but they're a tad pricey - 33ukp and up for a single
turning tool. What does one get for the extra cost that the Glanz ones don't
provide for about 11ukp each? I've also been told about a German supplier
called Deuss...

http://www.deuss.de/resource/DEUSS-Katalog.pdf

...page 36 for lathe cutters - set of six tools for 45 Euro (inc
Deutsche-VAT, plus delivery).


--
Wally
www.wally.myby.co.uk
Things are always clearer in the cold, post-upload light.



Posted by Tony Jeffree on March 1, 2008, 8:06 am
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On Sat, 01 Mar 2008 12:00:20 GMT, Bob Minchin

>Wally wrote:
>> I'd like to get some carbide tools for my 7x12 lathe and micro mill (Clarke
>> CL300M and CMD10 respectively). The lathe has a quick-change toolpost with
>> holders that will take 8mm tools, and the mill has collets up to 12mm.
>>
>> Want something sharp that will take clean cuts and last well. The main
>> materials I chop up are brass, aluminium, and some steel. I also plan to do
>> stuff with plastics (POM and PEEK, mostly). I'm aware of the need to keep
>> tools for steel and plastics separate.
>>
>> Having messed around with some carbide tips (just clamped in the toolpost),
>> I'm impressed with the way it cuts, so I'm thinking of getting a small set
>> of indexable carbide-tipped lathe tools (and a boring bar and parting off
>> tool). Similar for the mill - an indexable end mill, and maybe some carbide
>> slot drills.
>>
>> I've been looking at the lathe tool sets on Chronos - seems that Glanz is at
>> the better quality end of their range. A set of six tools plus boring bar is
>> about 80ukp, 25-30 for a parting tool. End mills are about 30ukp, but I
>> can't see carbide slot drills (they have a set of 6 carbide end mills,
>> unknown make, for 50ukp).
>>
>> Is Glanz a good make? Are the tips on these likely to suit the materials I
>> want to cut? There are two end mills - a 20mm with a single carbide tip, and
>> a 25mm with two tips - which is better, if any? Any suggestions for
>> alternative makes to consider, and maybe other suppliers in the UK?
>>
>> Thanks in advance,
>>
>My advice would be to look at availability of surplus tips to fit
>whichever brand of holder you end up with.
>I bought stellram holders some years ago and the angle of the diamond
>shaped tip is not widely used and so I'm confined to using genuine
>Stellram tips. Not a problem and the tooling is good but I rarely see
>cheap tips on ebay etc.
>
>Greenwood set themselves up a while back supplying the model
>engineer/smaller tool user. Don't know if they are still around but they
>had a good reputation.
>
>hth
>
>Bob

Greenwood are still around -

http://www.greenwood-tools.co.uk/

They aren't particularly cheap, but the stuff they sell is good
quality (Sandvik).

The other dealer that regularly shows up at the ME exhibitions is JB
cutting tools -

http://www.jbcuttingtools.com/epages/es108275.sf

Their prices are much better & the quality is good too. They used to
do a double sided turning tool that used CCMT 0602 inserts - one way
up it gave you a left-hand knife tool and the other way up it is a
right hand knife - neat idea. Their stand at the shows has tons of
surplus stuff too.

I haven't tried the Glanze tools (others may have an opinion) but the
price looks good. I bought a cheap set from Chronos a few years back -
the Torx screws were made of soft wax as far as I could tell, the
holders were badly machined and didn't grip the inserts properly, and
the inserts weren't very good either. Apart from that it was great
value...the wooden box they came in was definitely the high point. I
think these probably correspond to the "economy sets" listed on their
site. False economy in this case - for what I paid for the set, I
could have had one of the JB holders and had a usable tool.

Most of my turning is done using a RH knife tool - you could do a lot
worse than getting one of these in a suitable shank size:

http://www.jbcuttingtools.com/epages/es108275.sf/en_GB/?ObjectPath=/Shops/es108275_shop/Products/SCLCR06/SubProducts/SCLCR06-06

There are also boring bars available that take the same CCMT 0602
inserts, which is convenient.

Although these full sets look very appealing, you can do pretty much
everything you need to do with a LH and RH knife tool and a couple of
boring bars. Add a threading holder with a TCMT triangular tip and you
would be good for cutting metric threads too.

Regards,
Tony

Posted by Peter Neill on March 1, 2008, 8:24 am
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wrote:

>On Sat, 01 Mar 2008 12:00:20 GMT, Bob Minchin
>
>>Wally wrote:
>>> I'd like to get some carbide tools for my 7x12 lathe and micro mill (Clarke
>>> CL300M and CMD10 respectively). The lathe has a quick-change toolpost with
>>> holders that will take 8mm tools, and the mill has collets up to 12mm.
>>>
>>> Want something sharp that will take clean cuts and last well. The main
>>> materials I chop up are brass, aluminium, and some steel. I also plan to do
>>> stuff with plastics (POM and PEEK, mostly). I'm aware of the need to keep
>>> tools for steel and plastics separate.
>
>Greenwood are still around -
>
>http://www.greenwood-tools.co.uk/
>
>They aren't particularly cheap, but the stuff they sell is good
>quality (Sandvik).
>
>The other dealer that regularly shows up at the ME exhibitions is JB
>cutting tools -
>
>http://www.jbcuttingtools.com/epages/es108275.sf
>
>Their prices are much better & the quality is good too. They used to
>do a double sided turning tool that used CCMT 0602 inserts - one way
>up it gave you a left-hand knife tool and the other way up it is a
>right hand knife - neat idea. Their stand at the shows has tons of
>surplus stuff too.
>
<snipped lots of good stuff>

To add to what the others have said, I tend to use almost one tool
pretty exclusively on my ML7. The style is an SDJCR which uses a
diamond shaped insert with a 55deg included angle, and uses DCMT
inserts.
It's more versatile than SCLCR (which uses CCMT or CCGT inserts) as
you can get in close to a centre in the end of a bar, and the longer
shape of the insert also lets it get into other confined spaces.

The Sandvik inserts I use in this are DCMT070202, grade MF-1025. These
have a 0.2mm corner radius and are primarily intended for stainless,
but cut mild steel, alloy steel, stainless, and plastics with equal
aplomb and ease, even on my speed-limited machine.

They will also happily cut half a thou' for a finish pass, though
perhaps with not quite such a perfect finish as sharp HSS, and also
cut up to 0.040" before the belt slip kicks in.

They are fairly idiot proof as regards feeds and speeds and work much
better for me than the CCMT style.

Peter

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