Re: [CAD_CAM_EDM_DRO] using a CNC mill to engrave metal

Hi Smoke:
With all due respect, I think your chances of success with an 0.005"
endmill in a Sherline are pretty poor.
You don't have nearly the spindle speed for such a small cutter, and you
don't have the positioning resolution to control it well enough to avoid
snapping it on the first entry move.
Try to mill something like a firearm receiver at 38-40 Rockwell, and I don't
think you have a prayer.
Besides, those 0.005" endmills are expensive!!
Cheers

Marcus
-----Original Message-----
From: Smoke <gordonr@...>
To: CAD_CAM_EDM_DRO@yahoogroups.com <CAD_CAM_EDM_DRO@yahoogroups.com>
Date: Tuesday, August 14, 2001 7:02 AM
Subject: Re: [CAD_CAM_EDM_DRO] using a CNC mill to engrave metal

>The biggest factors concerning what cutting tool to use would be the size

of

>the lettering and what sort of effect your trying to achieve with your
>n"engraving". Since the depth of cut is only going to be a few

thousandths,

>you could do your engraving with a .005" (or so) diameter end mill. If you
>wanted the lettering to look more like real engraving, you could you an end
>mill with a tapered point.
>
>BTW...if you use a .005 or a .010 dia. end mill for cutting the letters,
>you'l have some really accurate letter shapes which can easily be

converted

>for gold/silver inlay work. Sounds like a great idea for doing lettering
>inlay work on firearms.
>
>Smoke
>
>
>
>>david albert wrote:
>>
>>> I was wondering if anyone has any experience using a sherline mill
>>> with a CNC package as an engraver. Ideally, I would like to be able
>>> to type some text on a keyboard and have the mill enrave some metal
>>> down a few thousandths with what I typed. What end mill should I
>>> use? What CNC software? Any web site you could point me to? thanks
>>> in advance.
>>
>>if you are doing 2" high letters, a 1/16" or smaller end mill might do.

If

>>you are doing smaller letters, a flame-point carbide bur (Dremel-style
>>tool) will do nicely.
>>
>>Jon
>>
>>
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>
>
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>
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