On Sunday, May 06, 2012 02:33:08 PM Jon Elson did opine:

> gene heskett wrote:
> > Thanks to all who helped, I cut another thread this evening, wrong of
> > course but at least I now know why it was wrong.  Hopefully the next
> > one will be right.  ;-)
> 
> Progress comes in small steps, but as long as each step moves in the
> right direction, that is good!
> 
> Jon

;-) Exactly Jon.  The next thing I fix is a much stronger X motor, but that 
will likely be a couple weeks since the couplings are of course coming from 
China. :( I have no clue as to the carriages balance with the heavier motor 
on the rear either.  I may have to make a tapered gib setup for it that I 
saw someplace on the intertubes. :)  And I need to pull the apron off and 
see if I can take a few thou of play out of the half nut ways.  The 
reversing backlash move is a big growf.  Ball bearing thrust washers on the 
leadscrew would help too I think, something I could preload a bit.  I put 
those in the mills crank end of the screw bearings, helped a bunch there.

What is the best practice to establish the X zero on a lathe?  I am making 
a test cut, measuring it and dividing that by half to enter in a Touch Off.

Has anyone else come up with a better idea that might be more usable?

Mid job even while paused, take a measurement & correct before unpausing 
and finishing?  Pause should stop the spindle, and resume should restart it 
& wait for speed, 2 seconds max on my toy unless running at polishing 
speeds.

I guess that is a feature request.  Or...  Is this spindle stop & restart 
something that that could be 'wired' into the .hal file.  Seems to me that 
could be done once hal was ones basic first language.  Long winter night 
stuff.  ;-)

Thanks Jon.

Cheers, Gene
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
My web page: <http://coyoteden.dyndns-free.com:85/gene>
If it ain't broke, don't fix it.

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