Re: 1/3 stroke turns to be 2/3 stroke (was RE: ATM Pressure during po lishing??)

[Ken Lowther <s0109366@cc.ysu.edu>]

On Tue, 1 Jun 1999, Bob Prabowo wrote:

> When I read your post I realized that the strokes I've been using were
> actually 2/3 strokes, not 1/3 COC!!!!  And I've been using this kind of
> stroke right from the beginning!!
> 
> Okay, what should I do now? Is it a problem? I tested the mirror with
> Ronchi, but except for a small bending of the lines at the edge of the
> mirror, I saw nothing else, the lines were straight accross the mirror
> but were not smooth. What I mean with "not smooth" is that though they
> were straight lines, the sides of the lines were not clearly defined
> (the sides were blur). Boy, it's so hard to explain it, I hope you
> understand what I'm saying.

Hard to believe the lines are straight!  How many lines are you looking at
on the face of the mirror?  Are they still straight at 5 or 6 lines across
the face?  My biggest problem was an edge that simply could not be
polished out.  You only have to go back to 320 or 500 if you go back.
That is the good news.  

The blurred lines are probably surface roughness.

Ken Lowther  
s0109366@cc.ysu.edu
Youngstown, Ohio  USA
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