Re: [CAD_CAM_EDM_DRO] Diamond engraving cutters

Alan, I'm not sure I understand your question about a spining facet.
These points I am talking about are diamond abrasive, not a burr type
cutter. The cutting is generally done somewhat up on the side of the
sphere not the very tip.

Terry

Alan Marconett KM6VV wrote:

>
> Thanks Terry,
>
> Although I probably don't need 50! But at $15 ea, might as well. So
> how does a spherical or pointed cutter cut? Is there a facet spinning
> around?
>
> Alan KM6VV
>
> Terry Toddy wrote:
> >
> > We use disposable diamond engraving points, .100 dia. spherical, at
> > about 100,000 rpm (air motor hand piece like a dentist).
> >
> > These points are available from:
> >
> > Saebur Supply
> > Addison, IL 60101,8510
> > 800-383-8095
> >
> > part #5516
> > $54.25 for 50
> >
> > I guess the reason for spinning it at such a high speed is because the
> > diameter is so small. In fact if you have a pointed cutter the
> > theoretical cutting surface speed at the point is zero no matter how
> > fast you spin it.
> >
> > Terry