RE: [CAD_CAM_EDM_DRO] Finding Z zero for CNC

We use several different setup methods to set the Z-axis to various degrees of accuracy.

Paper - least accurate, but heck it's close enough for a quick job

Electrical circuit devices - decent and it's consistent and repeatable up to about 0.0005"

Z-axis setter like this one on ebay - (no I'm not affiliated with the seller in any way)
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=41939&item=3813751001&rd=1
I was surprised (yeah, we just got that last week) that this was more consistent that the electrical circuit device (we have been using a Fowler "electronic" Z-axis setter).

Renishaw probe (got one - have to rig it up to the CNC mill... one of these days)

-AT

--
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Adrian W Teo e: adrian.teo@...
Senior Support Systems Analyst p: 480.965.9411
Information Technology Instruction Support f: 480.965.6317
Arizona State University CPCOM 233
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> -----Original Message-----
> From: Scott A. Stephens [mailto:sstephenssprint020@...]
> Sent: Sunday, May 02, 2004 3:55 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> 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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