[Harp-L] Re: Flat sanding problems

[Dave S <harpmicgaskets@xxxxxxxxx>]

> Boris, I got a tip from Kenya Pollard when he bought a couple of custom
> harp cases from me, weight the comb down with a 1 lb fishing weight (large
> flat weight) and pull them both down on the sandpaper, pick it up, go to
> the top and do it as long as necessary.  Although he was only talking about
> flat sanding and not the removal of material to make the comb thinner, and
> applying the Richard Sleigh theory of not using your fingers while sanding
> because of the uneven pressure, I think you get the idea.
>

Use a weight on the comb, use Dave's figure 8 motion, and take you time.
Also, are you taking it all off one side? Maybe turn it over once in a
while and do some on both sides.

Dave S

www.harpmicgaskets.com
www.customharpcases.com


Date: Wed, 26 Dec 2012 17:17:50 +0300
> From: Boris Plotnikov <ploboris@xxxxxxxxx>
> Subject: [Harp-L] Flat sanding problems
> To: harp-l@xxxxxxxxxx
> Message-ID:
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>
> 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
>
>