Re: power outages

Rich,
That is correct- non-rotating. The technique is called "Diamond drag" .
The diamond point is literally drug through the surface of the part. The
point will usually ride on the surface a bit, because the point is a 120
degree angle (not sure) and not dig in too far. With a pantograph, you
have to run the pattern repeated times to plow deeper into the piece. I
use my CNC mill/drill with the bit chucked into the collet, with a dial
indicator stuck to the quill. The indicator helps me set up the part.
Usually, I touch the diamond onto the piece (just touch it) raise the quill
.030", tell the control that the quill is at .032" then start the program.
I know that this is hell on the spindle bearings of this machine, but at
this point, I don't even care. I have other machines to do actual milling
and this machine is just an engraver now.
The New Hermes pantograph has a follower nose on the head that lets it ride
up and down on curved surfaces, using rotating bits, but I think that the
diamond bit gives a superior finish and the follower leaves light scratches
that need to be buffed out.

Dan


At 10:12 AM 1/16/2000 , you wrote:

>From: Rich Dean <cmsteam@...>
>
>Dan,
>Is this diamond bit intended for *non-rotating* use" in the New Hermes?
>