I personally wouldn't think 0.0025 isn't horrible, but the .009 is a 
little high, but depending on the machine size, it might really not 
matter. On our machines, that would be problematic, due to the 
crosslides weighing 3000-4000 lbs, (on the light side depending on the 
machine, 10,000 on one of ours) so trying to keep track of all that mass 
with almost 10 thou worth of lash would make it awful rough on the ball 
screw and servo.

Rick



On 4/6/2015 2:12 PM, John Alexander Stewart wrote:
> Hi all;
>
> Finally fixed the Oldham couplers for my X/Y axes on my latest build, and
> was measuring backlash for inserting in the LinuxCNC ini file.
>
> This is for a "G0704" style of mill conversion, using one of those kits
> from the old KeilingCNC place.
>
> X/Y/Z is 0.1mm, 0.24mm 0.1mm  or, 2.5 thou, 9 thou, 2.5 thou.
>
> Is this considered "ok" or "out of range"?
>
> I've put these figures in my mill ini file, and it's currently running the
> X and Y axes back and forth; will measure it again after a bit of wearing
> in.
>
> Any thoughts/comments?
>
> (as an aside, Andy Pugh's feedback for spindle soft-gearing works a treat -
> thank you again Andy)
>
> John.
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-- 

Thanks


Rick Lair
Superior Roll & Turning LLC
399 East Center Street
Petersburg MI, 49270
PH: 734-279-1831
FAX: 734-279-1166
www.superiorroll.com


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BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT
Develop your own process in accordance with the BPMN 2 standard
Learn Process modeling best practices with Bonita BPM through live exercises
http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_
source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF
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