On Sun, Feb 27, 2011 at 6:42 PM, gene heskett <ghesk...@wdtv.com> wrote:

> Greets all;
>
> I made up a wooden jig to mount the dull blades from my Delta JT360 6"
> jointer into the tiltable vice on may milling machines table.  The tilted
> it to 44 degrees, one less than the OEM grind.  Then mounted a dremel
> diamond disk in the mill and lowered it till it was about touching, turned
> the spindle on & started sweeping.
>

You're not supposed to use diamond cutting/abrasive tools for cutting
steel---if the interface temperature is allowed to rise anywhere near
transition points (i.e. you have sparks) carbon dissolves into iron, i.e.
diamonds lose their cutting power really quickly. I have read of people
dulling their diamond wheels in just few aggressive hot passes.

I think it's possible to defeat that by aggressive cooling, but the general
recommendation was against trying. Why not use a grinding wheel?
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