Re: [Harp-L] Flat sanding problems

[David Payne <dave@xxxxxxxxxxxxxxxxxxxxxx>]

At worst, you're rocking. At best, when you move the comb from side to side, there is more pressure on the leading side, less in the back. It's not that much of a problem for normal do-it-yourself flatsanding, but if you are repeating it over, and over and over again as you would if making a comb thinner, that difference is magnified into something very noticeable. A circular pattern for your sanding will help. Its a tricky thing to do, to sand a comb so that it is significantly thinner.
 
David Payne
www.elkriverharmonicas.com
www.hetrickharmonica.com



________________________________
 From: Boris Plotnikov <ploboris@xxxxxxxxx>
To: harp-l@xxxxxxxxxx 
Sent: Wednesday, December 26, 2012 9:17 AM
Subject: [Harp-L] Flat sanding problems
 
Hi to all!

I'm not happy with my flat sanding job. Usually I get stock combs and
polish them with 2000 sandpaper and it's ok for me and my customers. I'm
trying to turn standart 1847 silver comb (6 mm) into thinner comb (5.5 mm)
and it looks flat, but actually leaks, as central of comb is thicker than
borders. I follow ElkRiver instructions, use 800 sandpaper on a mirror,
extra comb under to support and minimum pressure, marker lines to look
where it works, but anyway they're not flat. What am I doing wrong?
-- 
Thanks, Boris Plotnikov
http://borisplotnikov.ru