Re: [ATM] slow polishiing

[Bill Mitchell <astronutski@yahoo.com>]

Actually, with the two radically different ROC's I really don't know
how to tell where the 'real' ROC is.  Do you always go off the
center?  I just don't know.
I just didn't think I was even close to being polished out yet so I
didn't bother noting the location.  I was under the assumption that
the inner sphere would grow as polishing progressed, and that wasn't
happening.
I know I have to test more with the laser and sun test to determine
if it is polished or not.  I know I can still see the laser enter,
although it is pretty dim.  Maybe I jumped the gun and shot those w/o
being polished.  My original question was meant as 'am I polished out
yet' and 'do these images help evaluate that'?  Not so much as what
corrective actions to take based on the images (assuming it is
polished out).
Sorry if I caused any confusion, as I have more than enough to go
around 8^).

-Bill


--- Guy Brandenburg <gfbrandenburg@yahoo.com> wrote:

> Sometimes the Will-Bell pitch can be a little on the
> soft side, especially if you are in a hot location.
> One solution to that is to chip off all of the pitch,
> put it, and whatever is leftover from when you poured
> it, into a pot and actually let it all simmer and
> bubble for 30 minutes or so. This drives off many of
> the more volatile elements of the mixture, and makes
> it harder. 
> 
> The person never did say whether the ronchigram was
> inside or outside of COC, however.
> 
> Guy
> 
> --- Bob May <bobmay@nethere.com> wrote:
> 
> > Looks to me like a strong hyperbolic surface with ha
> > high center.  This
> > often happens with soft pitch from my experience. 
> > The fun is going to be
> > getting the surface to a sphere at the present and
> > probably the best is to
> > do MOT and put one hand in front of the other rather
> > than side by side.  Do
> > your strokes with no W and the mirror should
> > eventually turn spherical.
> > I'll note that if you are getting images that good,
> > you probably are indeed
> > polished out.
> > Bob May



		
__________________________________
Do you Yahoo!?
New and Improved Yahoo! Mail - Send 10MB messages!
http://promotions.yahoo.com/new_mail 
_______________________________________________
ATM mailing list http://www.atmlist.net/