[ATM] Polishing and a red laser

[Curt Diggs]

I'm not sure I understand how the red laser test is too subjective. One simply uses a small hand magnifier (10 - 20x) to examine the surface where the laser light grazes it. The remaining pits (or lack thereof) are quite obvious and easily countable per unit area with a little work. That's hardly subjective, IMO.
   
  I also use the 60-100x Radio Shack hand microscope but for me, it's very narrow field of view somewhat limits its usefulness for this purpose. 
   
  Curt Diggs 
  
>Message: 11
>Date: Fri, 21 Sep 2007 13:12:42 -0700 (PDT)
>From: Guy Brandenburg <gfbrandenburg at yahoo.com>
>Subject: Re: [ATM] Polishing and a red laser
>To: Mitchell R <funnybone101 at embarqmail.com>, atm at atmlist.net
>Message-ID: <291803.65277.qm at web34611.mail.mud.yahoo.com>
>Content-Type: text/plain; charset=iso-8859-1
  >In my opinion, for finding out whether it's adequately polished, a
> radio shack mini illuminated  microscope does a great job for roughly $10.
> If you can't see anything at 60x or 100x, then it's sufficiently
> polished. I don't trust the red laser test, because I think it's too
> subjective, especially if you don't have a really-and-truly-perfectly-polished
> reference mirror on hand to compare with.
<snip>

       
---------------------------------
Need a vacation? Get great deals to amazing places on Yahoo! Travel.