Piano Finishes

[Farrell]

Oh, I'm sorry, I was just responding to your point :"The idea is to fill the
grain, right?" (with sanding between coats). Pretty much all finishes
require sanding between coats for the new film to bond to the existing
finish film. The glaring exception to this is traditional laquer, which has
the characteristic of "100% burn-in". One MAY elect to sand between all
coats regardless of what type of finish is being used to produce a more
smooth coat. This is often done at a minimum prior to applying the last coat
when the finish will not be rubbed out.

Terry Farrell
Piano Tuning & Service
Tampa, Florida
mfarrel2@tampabay.rr.com

----- Original Message -----
From: "David Ilvedson, RPT" <ilvey@jps.net>
To: <pianotech@ptg.org>
Sent: Monday, November 20, 2000 10:32 PM
Subject: Re: Piano Finishes


> We filled the grain and still sanded between coats.
>
> David I.
>
>
> -----Original Message-----
> From: Farrell <mfarrel2@tampabay.rr.com>
> To: pianotech@ptg.org <pianotech@ptg.org>
> Date: Monday, November 20, 2000 6:06 PM
> Subject: Re: Piano Finishes
>
>
> >There are two basic ways to fill grain (although grain-filling is not
> >desired in some cases). One is like you describe - spray on coat after
coat
> >while sanding between coats to fill grain. The other is to use some type
of
> >grain filler - often a paste-type filler - to first fill the grain before
> >applying topcoat. Less topcoats are then needed to achieve a completely
> >grain-filled finish.
> >
> >Terry Farrell
> >Piano Tuning & Service
> >Tampa, Florida
> >mfarrel2@tampabay.rr.com
> >
> >----- Original Message -----
> >From: "David Ilvedson, RPT" <ilvey@jps.net>
> >To: <pianotech@ptg.org>
> >Sent: Monday, November 20, 2000 10:57 AM
> >Subject: Re: Piano Finishes
> >
> >
> >> I haven't done any refinishing in a long time, but back when I did we
> >always
> >> sanded between coats.  The idea is to fill the grain, right?  What am I
> >> forgetting?
> >> David I>
> >> -----Original Message-----
> >> From: Farrell <mfarrel2@tampabay.rr.com>
> >> To: pianotech@ptg.org <pianotech@ptg.org>
> >> Date: Monday, November 20, 2000 4:53 AM
> >> Subject: Re: Piano Finishes
> >>
> >>
> >> >Most oil-based finishes - polyurethanes, epoxies, enamels, etc. and
> >> >water-based finishes require sanding between coats to provide a bond
> >> between
> >> >finish coats. Nitrocellulose laquer (most common type used for
decades)
> >has
> >> >a unique property of 100% burn-in. Each subsequent coat will melt
into,
> >or
> >> >partially dissolve, the previous coat, thus providing a great
> >coat-to-coat
> >> >bond, and eliminating the need to sand between coats for adhesion
> >purposes.
> >> >This feature can perhaps save about 4,000 hours (maybe more for me) of
> >> >sanding on a multi-coat piano refinishing!
> >> >
> >> >Terry Farrell
> >> >Piano Tuning & Service
> >> >Tampa, Florida
> >> >mfarrel2@tampabay.rr.com
> >> >
> >> >----- Original Message -----
> >> >From: "Clyde Hollinger" <cedel@supernet.com>
> >> >To: <pianotech@ptg.org>
> >> >Sent: Monday, November 20, 2000 6:30 AM
> >> >Subject: Re: Piano Finishes
> >> >
> >> >
> >> >> Friends,
> >> >>
> >> >> I am not into case refinishing, and I would like to know.  What is
> >meant
> >> >by
> >> >> burn-in?
> >> >>
> >> >> Regards,
> >> >> Clyde Hollinger, RPT
> >> >> Lititz, PA, USA
> >> >>
> >> >>
> >> >> > And the 100% burn-in quality
> >> >> > is a real plus, and is not time sensitive.  In other words, you do
> >not
> >> >> > have to recoat within a certain window to keep the burn-in
> effective.
> >> >>
> >> >>
> >> >>
> >> >
> >> >
> >>
> >>
> >
> >
>
>