[pianotech] (no subject)

[Douglas Gregg]

Gregor,
Yes to all your questions, but motoric is not a word I would use. It
really can't be motorized - I have tried. But the rubbing is circular.
The Konig special french polish may not dry any faster than the
traditional. That depends a bit on the dilution of shellac though and
the solvent used. The application is easier and the final shine is
better with no de-oiling, spriting off,  or waxing. I doubt that there
is much added to the "Special "  french polish except a lubricant and
perhaps some slight variation in the solvent, though I don't know this
and have not noticed a significant difference in odor. I am sure it is
a trade secret as well.

Doug Gregg
Classic Piano Doc

Message: 9
Date: Wed, 30 Jan 2013 10:39:10 +0100
From: Gregor _ <karlkaputt at hotmail.com>
To: "pianotech at ptg.org" <pianotech at ptg.org>
Subject: Re: [pianotech] How to remove scratches
Message-ID: <DUB104-W19FDEF6BBAA8B2E5246365D41E0 at phx.gbl>
Content-Type: text/plain; charset="iso-8859-1"


Doug,

when you say that you can polish a piano in 4 hours you are talking
about that Special French Polish by K?nig? Sounds great. If I got you
right, you do the same motoric movements like with the classical
French Polish, but the K?nig stuff dries quicker, needs no extra oil
and no special finishing to remove oil. I am just wondering why they
don?t sell it in Germany. Perhaps there are some ingredients that are
prohibited in the European Union? That topic made me more than
curious. Hm, I think I will ask K?nig and post the answer in a few
days here.

Gregor

------------------------
piano technician - tuner - dealer
M?nster, Germany
www.weldert.de


> Date: Tue, 29 Jan 2013 10:12:55 -0500
> From: classicpianodoc at gmail.com
> To: pianotech at ptg.org
> Subject: Re: [pianotech] How to remove scratches
>
> Gregor,
> You were doing traditional French polishing. It is much slower with
> more steps and more drying. I can French polish a piano that is
> scratched up in about 3 or 4 hours start to finish. Less time if it is
> not too scratched.
>
> I will differ a bit about French Polishing a polyester finish. It can
> be done. I have done it and it looks good. However, if possible, it is
> always better to sand and polish out a polyester finish if it has
> enough thickness because it will be more durable than the shellac. If
> you do French polish polyester, you should do the whole piece as it is
> a slightly different sheen and is a little difficult to blend to the
> polyester. There is no issue with adhesion. Shellac sticks to
> practically any surface.
>
> Doug Gregg
> Classic Piano Doc