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3191RE: [mlathemods] Re: Flat or raked part off tools?

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  • David Lee
    Jul 6, 2010

      Maybe someone would be so kind as to provide this uninformed novice [me] with a link to a photo of a “T” type parting tool.





      From: mlathemods@yahoogroups.com [mailto:mlathemods@yahoogroups.com] On Behalf Of Mert Baker
      Sent: Tuesday, July 06, 2010 9:46 AM
      To: mlathemods@yahoogroups.com
      Subject: RE: [mlathemods] Re: Flat or raked part off tools?


       I bought all my parting toolbits years ago, and they are all the wedge type.  However, one of 'em is now only an inch long, and I'll get one of the T type to replace it.   Never had any trouble with the wedge type, once I learned how to sharpen & set 'em properly. 

      [David Lee Responds ->] I’ve not ever had any luck at all with any parting tool but, if I keep at it, I may eventually finger out what I’m doing wrong.

       Until then, the less said, the better.




      -----Original Message-----
      From: mlathemods@yahoogroups.com [mailto:mlathemods@yahoogroups.com]On Behalf Of James W. Early
      Sent: Tuesday, July 06, 2010 9:30 AM
      To: mlathemods@yahoogroups.com
      Subject: Re: [mlathemods] Re: Flat or raked part off tools?


      Which is why the "T" style blades require only about 20% of the force that conventional wedge style bladeds do. This is also why they do not require a heavy rake like the wedge blades do and why they stay sharp up to 20 times longer. On my CNC at work wedge blades neded to besharpened every 3 hours in production while "T" blades were good for up to 36 hours on the same job. After using the "T" blades for over 20 years in production work I find it amazing people still waste their money and time on the silly wedge blades!

      Long Beach, CA

      --- On Mon, 7/5/10, David Beierl <dbeierl@...> wrote:

      > From: David Beierl <dbeierl@...>
      > Subject: Re: [mlathemods] Re: Flat or raked part off tools?
      > To: mlathemods@yahoogroups.com
      > Date: Monday, July 5, 2010, 7:09 PM
      > At 10:07 PM 7/5/2010 Monday, jim.klessig@...
      > wrote:
      > >Ok being one of them novices, what is the difference?
      > The old-style blades have an elongated V section and an
      > angled bottom
      > to clamp into a half-vee groove at the bottom of the tool
      > holder.  The T-style ones have a T section with a flat
      > bottom.  Because the width of the blade sharply
      > diminishes
      > immediately below the cutting edge these blades offer much
      > better
      > chip clearance.
      > Yours,
      > David


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