PSN-L Email List Message

Subject: Re: Tungsten Pins
From: "meredith lamb" paleoartifact@.........
Date: Tue, 10 Jun 2008 22:17:29 -0600


Hi Chris and thanks!

One more question.  Can the copper tube ID be slightly larger than the
carbide OD; or, is it
not even that critical?

Take care, Meredith Lamb

On Tue, Jun 10, 2008 at 9:10 PM,  wrote:

> In a message dated 2008/06/10, paleoartifact@......... writes:
>
>  Your techniques is a total unknown to me.  How do you do your method/s?
>
>
>
> Hi Meredith,
>
>        You use a copper TUBE which fits around the Tungsten Carbide rod.
> You put diamond paste on the rod and use the copper to polish it. The
> diamond chips bed into the copper surface by the pressure of the contact and
> they polish the hard rod. You can also make a U of copper sheet bent around
> a drill shank the same diameter as the rod and use diamomd paste to polish
> the rod. You can fit the rod in a slow drill / lathe chuck to provide the
> rotation. I add oil to the diamond paste to give a thick liquid. It is not
> difficult.
>
>        Regards,
>
>        Chris
Hi Chris and thanks!
 
One more question.  Can the copper tube ID be slightly larger than the carbide OD; or, is it
not even that critical?
 
Take care, Meredith Lamb

On Tue, Jun 10, 2008 at 9:10 PM, <ChrisAtUpw@.......> wrote:
In a message dated 2008/06/10, paleoartifact@......... writes:

Your techniques is a total unknown to me.  How do you do your method/s?


Hi Meredith,

       You use a copper TUBE which fits around the Tungsten Carbide rod. You put diamond paste on the rod and use the copper to polish it. The diamond chips bed into the copper surface by the pressure of the contact and they polish the hard rod. You can also make a U of copper sheet bent around a drill shank the same diameter as the rod and use diamomd paste to polish the rod. You can fit the rod in a slow drill / lathe chuck to provide the rotation. I add oil to the diamond paste to give a thick liquid. It is not difficult.

       Regards,

       Chris


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