Re: [CAD_CAM_EDM_DRO] Re: contact probes

Hi, have you tried water or milk as a coolant? even if just a mister might
keep it cool enough? cul brian f.

----- Original Message -----
From: "guzakaka" <nonna01@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Saturday, June 03, 2006 4:52 PM
Subject: [CAD_CAM_EDM_DRO] Re: contact probes


> Hi Graham,
>
> Not linear but circular. I tried cutting fast but I found the
> circular cuts were not round. I tried pre-drilling and then
> taking .010" cuts, but at 22,000 rpm I still had plastic sticking to
> the bit. It is delrin btw. I slowed the feed down to as low as 10 ipm
> with the small cuts but still no good. Yesterday I tried some glass
> filled nylon and that was disaster! I have some phenolic impregnated
> wood laminate that I may try.
>
> Mike
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Graham Stabler" <eexgs@...>
> wrote:
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "guzakaka" <nonna01@> wrote:
> > >
> > > Yeah and that would have saved me 296.19435 hrs this last week!;)
> > >
> > > Actually I have been trying to make one and the drawings would
> have
> > > been wonderful. I discovered something in this process too. It is
> > > hard to cut plastic with a router that has a fixed speed of
> 22,000
> > > rpm when the parts are small. Just can't move the router fast
> enough
> > > to get the chips out and they begin to melt to the bit.
> > >
> > > BTW thanks for making the photos available though!
> > >
> > > Mike
> > >
> >
> > I'm not sure I follow how could a linear movement cause the chips to
> > clear? You might want to try a smaller step down, do light cuts and
> > you are much less likely to get melting. It also depends on the
> > plastic, Delrin machines a bit more like brass than plastic,
> > perspex/acrylic is pretty crispy too but some of the chewy plastics
> > seem a nightmare.
> >
> > Graham
> >
>
>
>
>
>
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
timg@...
> Moderator: pentam@... indigo_red@... davemucha@...
[Moderators]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.394 / Virus Database: 268.8.1/355 - Release Date: 6/2/06
>
>