On Mon, 2008-07-28 at 23:10 -0500, Jon Elson wrote:
... snip
> 
> Another thing is that axis alignment is preserved when you hit 
> Estop or crash.  That generally isn't the case with a stepper 
> system.
> 
> Jon

On my stepper mill, I find that I am much less willing to press the
e-stop for this reason. I suppose home switches with a screw index would
solve that, but typical stepper machines don't have these.

-- 
Kirk Wallace (California, USA
http://www.wallacecompany.com/machine_shop/ 
Hardinge HNC/EMC CNC lathe,
Bridgeport mill conversion, doing XY now,
Zubal lathe conversion pending
Craftsman AA 109 restoration
Shizuoka ST-N/EMC CNC)


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