Re: ATM A 100% Sharpie Test?

[Ken Lowther <lowther@worldnet.att.net>]

Dan Cassaro wrote:
> 
> There have been a number of comments in the "Lapidary Grit" thread about
> using a Sharpie to test for pits (ie draw lines in ink, and then grind
> until the black pits disappear).
> A crazy thought:  could one spray the entire surface of a fine ground
> mirror, thus filling all the pits with ink, let dry, and then grind
> until *all* the black pits were gone?  It would certainly make finding
> pits much easier...

Just fill in the biggest ones.  As Mike said, you can drive yourself
crazy here.

-- 
Ken Lowther
Youngstown, Ohio
http://www.atmsite.org
ATM FAQ and more
Good starting place for amateur telescope makers