Re: [ATM] First Timer Polishing Questions

[Bill Prewitt <bprewitt@neo.rr.com>]

I use a 50X Edmund scientific pocket microscope with measuring reticle.
(You can find them on eBay)

It's more magnification than you really need, but it's handy to me able 
to actually measure pit/scratch size. You can also compare a pinch of 
fine abrasive to a suspect pit to see what it would take to remove it. 
You can polish out a .001" scratch, but much larger is a lot of work to 
remove by hand.

As you polish, look at the boundary between the polished and unpolished 
edge and watch it advance.... that's a good confidence builder.

              Bill Prewitt
            www.astrocaver.com



Bill Kelley wrote:
> Guy is right . I use a 20 power stereo microscope with oblique lighting and 
> it catches everything that wont polish out.
> Bill Kelley
> 
> Subject: Re: [ATM] First Timer Polishing Questions
> 
> 
>> I think we've finally found a *reliable* way to tell if a mirror is truly 
>> polished out. Radio Shack sells (or at least they did) little inexpensive, 
>> hand-held microscopes that go up to 30 X, and they also have a built-in 
>> light, for something like $10. With the highest power, you can actually SEE 
>> the little imperfections that show whether the glass surface is really 
>> polished or not. If you see'em, just polish some more, until they are gone.
> 
> 
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
> 

_______________________________________________
ATM mailing list http://www.atmlist.net/