Re: [CAD_CAM_EDM_DRO] diamond drag wasRe: Re: Any exciting on topic Christmas presents?

Ballendo,
I appreciate the thought. Turns out, I'm a commercial engraver myself.
The diamond drag tool is rather a blunt instrument.
For the CNC scratch tool we have a very sharp narrow angle tip that
leaves a fine line such as you would find on scrimshaw. A local
miniature tool maker uses CNC to do this very technique on his production
pieces in old ivory and bone.
Rich D.

ballendo@... wrote:

>
> Rich D wrote:
> >I made such a device for scratch tracing designs on clear acrylic
> >sheet to not only test out a file, but as a finished item. Mine
> >has only 3 parts. A hard steel stylus (antique phonograph needle), a
> >small coil compression spring and a short length of 1/4" dia brass
> >rod.
>
> List,
>
> Commercial engravers use a diamond tipped 'point' (non-spinning) and
> call it "diamond drag" engraving. Most monogramming of personal items
> is done this way, since the curvature (if any) of the item is nearly
> inconsequential...
>
> The diamond tips are available from any engraving supplier.
>
> Hope this helps.
>
> Ballendo
>
> P.S. Just thought of using a grinding wheel 'dressing' diamond.
> Hmmm...
>
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-==Rich=-=Colorado Midland Railway=-=<http://www.geocities.com/cmsteam/>