From: "Gary McKenzie" 
To: , "Bill T." 
Reply-To: "Gary McKenzie" 


Hi Bill,

thanks for the info, I had always "believed" CeO was smaller than
1 micron, which was why I was surprised to find the 2 micron size. I will
use it per your advice.

cheers
Gary

----- Original Message -----
From: "Bill T." 
To: 
Sent: Tuesday, March 04, 2003 12:14 PM Subject: Re: ATM CeO particle size


> Hello Gary,
>
> Most ceo's are around 1 or 2 microns.  Can't really compare them to grits,
> since ceo is much softer acting.  What you have is probably ok to polish
and
> figure with.  The cutting effect of ceo has more to do with its
> concentration on the mirror's surface, than with the particle size.  When
> you get to figuring, try to keep the concentration as low as possible.
>
> I have made mirrors with stuff as coarse as the 3 micron "Big C"
suspension
> intended for polishing window glass, to 0.7 micron Regipol suspension.
> Honestly, I don't see any difference whatsoever in the performance of the
> mirrors done with either.  All these mirrors responded to the flashlight,
> solar caustic, and lazer-dot tests exactly the same way.  Just finish up
> with low concentration, and you should be fine.
>
> Bill Tondreau
>
>
>
>
>
>
>
>
> >From: "Gary McKenzie" 
> >Reply-To: "Gary McKenzie" 
> >To: 
> >Subject: ATM CeO particle size
> >Date: Tue, 4 Mar 2003 10:09:25 +1100
> >
> >
> >HI just wondering if anyone new the particle size of CeO? I've come
across
> >some marked "grade 1660, 2 micron". I'd always thought
that it was finer
> >than that - since I usually grind down to 5 micron.
> >
> >Gary
> >
> >
>
>
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