Re: [CAD_CAM_EDM_DRO] Diamond engraving cutters

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
>
> Alan Marconett KM6VV wrote:
> >
> > Hi,
> >
> > While we're on small cutters, could someone tell me why we SPIN a
> > diamond at high speed (Dremel) to engrave? I looked at the $15 Dremel
> > diamond and carbide "points" I just received, and the diamond looks like
> > it just comes to a point. I think the carbide has a flat on it to cut
> > with.