On Wednesday 09 August 2017 21:26:33 Jon Elson wrote:

> On 08/09/2017 10:38 AM, Dan Bloomquist wrote:
> > I know how accurate this thing is. The idea is that I can
> > start up without hunting switches.
>
> Why is that such a big deal?  LinuxCNC now can do all axes
> with the press of ONE button!
> I really don't see the need for exotic and possibly finicky
> sensors when a VERY simple switch will actually do the job
> BETTER!  A lot of people who don't have encoder index to
> refine the accuracy report simple microswitches have a
> repeatability of about 0.003"
>
> Jon
>
I think I am beating that with dollar a copy on ebay microswitches, Jon.  
A thou or so.  Which is about what I can measure is absolute terms. Z 
repeatability is better than the backlash on the Sheldon.

Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>

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