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Posted by Peter Neill on May 24, 2008, 2:12 am
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On Sat, 24 May 2008 03:25:20 +0100, Peter Fairbrother
>Steve wrote:
>>
>>> On Fri, 23 May 2008 12:22:36 -0700 (PDT), jontom_1uk@hotmail.com
>>> wrote:
>>>
>>>>
>>>> Peter Hi, a friend of mine by way of a gift of a couple, introduced me
>>>> to the CCGT (aluminium) inserts a while ago when I still had time to
>>>> go into the workshop. In planning a return to work :-), I haven't yet
>>>> found an economic source (ie less than £5 each), have you - or is it
>>>> one of those instances that the bullet just has to be bitten?
>>>>
>>>> Regards
>>>>
>>>> Keith (short of both time and money)
>>>
>>>
>>> Keith, sent you an e-mail.
>>> Much cheaper than £5 a pop <G>
>>>
>>> Peter
>>
>> Peter - wouldn't mind the same pointer -
>>
>> eMail is good
>
>me too!
>
>Alternatively, does anyone have any for-aluminium TPUN or TPMR 11030x /
>22x inserts I could try? Beer tokens ok.
>
>-- Peter Fairbrother
Peter, it's no secret really, but I buy mine from e-bay, you just have
to keep an eye out for them. I e-mailed Keith rather than posting here
at first as there are some up for sale on there now.
About 2 years ago I bought a pack of Walter (brand) CCGT's from e-bay.
These are 09's, so need a 12mm shank holder, but these things are
mirror polished with a coppery coating, and are sharper than the point
on a demons tail.
Talk about a lucky find, as I hadn't heard of Walter before, but they
will shave the hair off a gnats b***s without breaking the skin.
They weren't dear either, and I've since bought another 2 packs at
around £12-£15 to keep for the future, as the Walters don't seem to
come up that often.
Mine supposedly have a 0.4 nose rad, but it feels like a much sharper
one than that.
There are some sandvik CCGT's on at the moment, listing here:
http://cgi.ebay.co.uk/10-Sandvik-Carbide-Turning-Inserts-CCGT-09T308-UR_W0QQitemZ380008837407QQihZ025QQcategoryZ112399QQrdZ1QQssPageNameZWD1VQQcmdZViewItem
and here
http://cgi.ebay.co.uk/10-Sandvik-Carbide-Turning-Inserts-CCGT-120408-UR_W0QQitemZ380008837355QQihZ025QQcategoryZ112399QQrdZ1QQssPageNameZWD1VQQcmdZViewItemQQ_trksidZp1638Q2em118Q2el1247
both for £14.95 at 'buy-it-now', but both also have 0.8 nose rad, so I
don't know how they will compare to the Walters.
Even though they are meant for aluminium they work brilliantly with
mild steel and alloy steel like EN19 and 316 stainless for a finishing
cut.
Peter
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Posted by Austin Shackles on May 24, 2008, 8:26 am
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On or around Sat, 24 May 2008 07:12:46 +0100, Peter Neill
>
>There are some sandvik CCGT's on at the moment, listing here:
>http://cgi.ebay.co.uk/10-Sandvik-Carbide-Turning-Inserts-CCGT-09T308-UR_W0QQitemZ380008837407QQihZ025QQcategoryZ112399QQrdZ1QQssPageNameZWD1VQQcmdZViewItem
>and here
>http://cgi.ebay.co.uk/10-Sandvik-Carbide-Turning-Inserts-CCGT-120408-UR_W0QQitemZ380008837355QQihZ025QQcategoryZ112399QQrdZ1QQssPageNameZWD1VQQcmdZViewItemQQ_trksidZp1638Q2em118Q2el1247
>
>both for £14.95 at 'buy-it-now', but both also have 0.8 nose rad, so I
>don't know how they will compare to the Walters.
>
>Even though they are meant for aluminium they work brilliantly with
>mild steel and alloy steel like EN19 and 316 stainless for a finishing
>cut.
>
So, how do you tell they're for aluminium?
is that the UR bit?
flaming codes are like a gordian knot.
--
Austin Shackles. www.ddol-las.net my opinions are just that
Travel The Galaxy! Meet Fascinating Life Forms...
------------------------------------------------
>> http://www.schlockmercenary.com/ << ...and Kill them.
a webcartoon by Howard Tayler; I like it, maybe you will too!
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Posted by Bill on May 24, 2008, 3:25 am
Please log in for more thread options After reading all the posts on lathe tools and grinding HSS I think on our
club stand at Harrogate next year I should take a grinder and some HSS
blanks and show people how to grind tools by hand. No jigs, no gauges. It
would only take a few minutes per person to get them started. Once you know
what you are after doing that's the hardest part done. Of course we would
not have to tell the people selling tips. If not a grinder on the stand we
could be available to talk to people and have a few sketches and tools we
had ground. It might help someone. I might start taking some tools to the
steam rallies I go to so people can see how it is done.
Bill
> Steve wrote:
>>
>>> On Fri, 23 May 2008 12:22:36 -0700 (PDT), jontom_1uk@hotmail.com
>>> wrote:
>>>
>>>>
>>>> Peter Hi, a friend of mine by way of a gift of a couple, introduced me
>>>> to the CCGT (aluminium) inserts a while ago when I still had time to
>>>> go into the workshop. In planning a return to work :-), I haven't yet
>>>> found an economic source (ie less than £5 each), have you - or is it
>>>> one of those instances that the bullet just has to be bitten?
>>>>
>>>> Regards
>>>>
>>>> Keith (short of both time and money)
>>>
>>>
>>> Keith, sent you an e-mail.
>>> Much cheaper than £5 a pop <G>
>>>
>>> Peter
>>
>> Peter - wouldn't mind the same pointer -
>>
>> eMail is good
>
> me too!
>
> Alternatively, does anyone have any for-aluminium TPUN or TPMR 11030x /
> 22x inserts I could try? Beer tokens ok.
>
> -- Peter Fairbrother
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Posted by Peter A Forbes on May 24, 2008, 3:33 am
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>After reading all the posts on lathe tools and grinding HSS I think on our
>club stand at Harrogate next year I should take a grinder and some HSS
>blanks and show people how to grind tools by hand. No jigs, no gauges. It
>would only take a few minutes per person to get them started. Once you know
>what you are after doing that's the hardest part done. Of course we would
>not have to tell the people selling tips. If not a grinder on the stand we
>could be available to talk to people and have a few sketches and tools we
>had ground. It might help someone. I might start taking some tools to the
>steam rallies I go to so people can see how it is done.
>Bill
While at the Dutch engine rally in Nuenen a week or so ago, we picked up a small
boring bar and a new box of DCMT tips for a reasonable price.
We already have an external tool holder that takes the same tips, so we are now
more or less set up for our workshop Raglan Littlejohn lathe.
We also have a selection of standard Jones & Shipman boring bars which we mangle
the tools for occasionally.
Peter
--
Peter A Forbes
Prepair Ltd, Rushden, UK
peterforbes@prepair.co.uk
http://www.prepair.co.uk
http://www.prepair.eu
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Posted by lfoggy on May 24, 2008, 4:34 am
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When I bought my first lathe (an old ML7) in 1982 it came with a giant
box of HSS bits, literally hundreds of them, and I have been using them
ever since. As has been said, regrinding them freehand on an offhand
grinder is relativly easy, they are cheap and you can also make odd
shapes as well. Having built a Worden grinder from the Hemmingway kit I
can now grind the tool angles very accuratly and repeatably as well. A
few years ago however on a whim I bought a couple of Arrand indexable
turning tools and these are superb. The tips last for ages, give a good
finish and are hard enough to easily deal with things like chilled areas
on cast iron castings. If I was starting from scratch (and had the
money) I would invest in a set of quality indexable tools such as Arrand
or the ones available from Greenwood Tools and leave the HSS for the
special jobs.
--
lfoggy
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