Re: [CAD_CAM_EDM_DRO] Re: Finding Z zero for CNC

ballendo & all,
Paper is ok, but not too practical when the the tooling is dripping
with coolant, oil, etc.
I use shim stock (stainless steel or blued steel) of .003 or whatever
thickness is handy but still flexible. You get a good feel for the "fit"
and an known measurement on touch off. Lasts a long time and not messy.
RichD

ballendo wrote:

>
> Hello,
>
> The "classic" paper to use for this is cigarette paper. .001 thick,
> and comes in a nice package with easy access to multiple sheets.
>
> If high-acuracy is needed be aware of the effect of humidity upon
> paper...
>
> Hope this helps,
>
> Ballendo
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Greg Nuspel" <nuspel@t...>
> wrote:
> > You can use a piece of paper between the tool and the part. Move
> the paper
> > back and forth while lowering the tool. When the tool grabs the
> paper you
> > will be about .002" above the work. It takes a little practice but
> you will
> > be able to get predictable results. Measure your paper most I use
> is .003"
> > thick.
> > --Greg
> >
> > ----- Original Message -----
> > From: "Scott A. Stephens" <sstephenssprint020@e...>
> > To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> > Sent: Sunday, May 02, 2004 4:54 PM
> > Subject: [CAD_CAM_EDM_DRO] Finding Z zero for CNC
> >
> >
> > > Though I would ask since I'm still learning. How are you
> accurately
> > > setting zero for Z. I drive down and us a visual method, with a
> light
> > > behind the cutter and wait till I can not see a gap between the
> cutter and
> > > the material. But still wind up being just a hair off and would
> like to
> > > get it perfect for multi tool programs. Thanks.
> > >
> > >
> > >
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> 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........
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