Re: [CAD_CAM_EDM_DRO] CNC Engraving

Hi Jack

Have a look at this video. It's slightly off-topic, but notice the RPM and
milling feed rate. Note especially how deep the cutter goes according the
RPM. It's not forced, so this looks to me like the 'natural' depth of cut,
at a surprisingly low RPM.

http://blog.cnccookbook.com/2013/02/10/use-a-spring-loaded-engraving-tool-to-pick-up-the-engraving-pace/?utm_source=CNCCookbook+Blog+Posts&utm_campaign=6d11602596-RSS_EMAIL_CAMPAIGN&utm_medium=email

or directly;
http://www.youtube.com/watch?feature=player_embedded&v=RYLtL1R440E

Regards
Roland

On 23 May 2013 20:39, Jack McKie <freshwatermodels@...> wrote:

> **
>
>
> Dan,
>
> That is a consideration as I can only turn about 4000 rpm on my cnc
> minimill. Is this unrealistic with a .2mm or .3mm cutter at slow feed
> rates? I know feeds and speeds are important. These are actually parts
> that should be etched brass but I only need a couple of each.
>
> Jack
>
>
> ________________________________
> From: Dan Mauch <dmauch@...>
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Sent: Thursday, May 23, 2013 1:45 PM
> Subject: RE: [CAD_CAM_EDM_DRO] CNC Engraving
>
>
>
>
>
> Not sure how you plan to run the engraving bit but you really need high
> speed. I am using 10,000 rpm but I wish I could go up to at least 40,000
> for
> such a small cutter.
>
> Dan Mauch
>
> www.camtronics-cnc.com
>
> mailto:dmauch%40camtronics-cnc.com
>
>
> Stepper and servo motors
>
> Kits, assembled and custom CNC using Gecko products.
>
> From: mailto:CAD_CAM_EDM_DRO%40yahoogroups.com
> [mailto:mailto:CAD_CAM_EDM_DRO%40yahoogroups.com] On Behalf Of Jack
>
> Sent: Thursday, May 23, 2013 10:11 AM
> To: mailto:CAD_CAM_EDM_DRO%40yahoogroups.com
>
> Subject: [CAD_CAM_EDM_DRO] CNC Engraving
>
> I want to make a couple of name plates for a model locomotive. They are
> made
> of brass and tiny. I have been looking at pointed carbide "engraving" bits
> from China on eBay. I assume these are intended for making ciruit boards. I
> am wondering if anyone has had experience using these? The one I am
> considering using is about .2mm which I beleive works out to about .008"
>
> Any comments or insite would be appreciated.
>
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>
> [Non-text portions of this message have been removed]
>
>
>


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