On Saturday 28 June 2014 07:19:54 jeremy youngs did opine
And Gene did reply:
> use the calculator in syepconf just setup a different machine if you
> dont want to mess with your ini . then transfer the nubders to yours
> 
I may have figured it out while finishing my nights sleep, and editing the 
ini is not a problem.

What I wanted to do was treat the screw as an imperial screw, which if my 
mousing around with kcalc is correct, means its equ to a 10.16 tpi screw.

If it was a 10 tpi, then the 64000 becomes 32000, but its not exactly a 
10, but 10.16.  The motors are running at a microstep of 8.

So 32000/10=3200, and 3200*10.16=32512.  I'll check it against my 
indicators of course as I have a 1" travel dial indicator.

So while the temps are reasonable, go drill & tap the motor mount posts I 
shortened last night after it had started to cool off. At least I hope I 
can use a G33.1 in a peck loop to do the tapping. 6mm is bigger that I 
have tried to date, and the spindles timing belt drive is being a problem.

That will put the motors back on, and next is getting the limit switches 
wired into the BOB, and incorporated into the hal file.  And a small 
manifold mounted on the post with an oil cap as I rigged a bit of weed 
eater fuel line to each nutholder to keep the balls swimming in oil.  I 
assume Vactra is suitable for that.  Theoretically the only escape path 
for the oil will be the felt pads I put in the holders to wipe swarf off 
the screws.  Cut from the brim of an old Woolrich western hat.  However, 
both holders have other leaks as the entry hole for the short brass tube 
the line hooks to, managed to clip the side of a hold down bolt hole.

Come under the excrement happens heading I think.  The X holder is a work 
of art, no room for a screw in plug due to nowhere near enough height 
under the table, so the end cap that pinches everything into place is 
being held by a dozen 0-80 hard steel cap screws.  The edge of that 1/8 
steel plate are sealed with super glue.  I think...

When I put the much larger screw on the lathe for Z drive, I found the nut 
had formed felt washers in each end, and so far no debris has made it past 
those felt wipers.  So the lathes Z screw is sitting there bare.  Any 
covers I was able to find would have cost me at least 3" of travel on each 
end, so that wasn't practical, not to mention the cost would have been 
north of $200.  So I tried to duplicate that when I made the mills nut 
holders.

Thanks Jeremy & the rest of you.

> jeremy youngs
> 
> On Sat, Jun 28, 2014 at 6:36 AM, Gene Heskett <[email protected]> wrote:
> > Greetings;
> > 
> > My mill's old XY screws were 20 tpi acme's and have now been replaced
> > with 2.5mm pitch ball screws.
> > 
> > The current scale is 64000 in those 2 axis's.  Is there a quick and
> > dirty way to convert that 64000 to the new screws value?
> > 

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>
US V Castleman, SCOTUS, Mar 2014 is grounds for Impeaching SCOTUS

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