[pianotech] plate finishing and touch up

Nick Gravagne gravagnegang at att.net
Fri Feb 26 09:49:42 MST 2010


Thanks David. I will consider your suggestions.

 

Now let me come at this by saying that in the default condition chips
and ripples are unavoidable. Those of you for whom this is not the rule,
please weigh in. But given chips that now require touch up, how do you
proceed? I have never been happy with this kind of touch up, especially
in the web area where you are now working around new pins and coils.

 

In any case, all I have really been able to do is brush in some gold
lacquer, but this doesn't fill the chip, it just colors it. A bondo
patch will require sanding which will scuff the plate beyond the small
localized repair, and now things can go from bad to worse.

 

Joe Garrett writes:

 

I have become quite good at repairing the chips.

 

Nick writes:

 

Ok, Joe, now you've done it! How about some tips on chips and dips?

 

Nick Gravagne, RPT

Piano Technicians Guild

Member Society Manufacturing Engineers

Voice Mail 928-476-4143

 

  _____  

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On
Behalf Of David Love
Sent: Friday, February 26, 2010 9:29 AM
To: pianotech at ptg.org
Subject: Re: [pianotech] finishing a plate

 

I use a very light coat of primer.  Only enough to seal the bondo areas
really and give a nice flat uniform color so that I can more easily see
any chips or scratches I missed.  I agree that generally it's better to
keep the finish on the thick enough to get good coverage but otherwise
on the thinner side.  When you add the clear topcoat it can get too
thick and take awhile to really harden so as not to get marred when you
lay on plate hardware.  Think about it, after refinishing a case it's
usually advisable not to move the piano for at least 3 weeks unless you
want blanket imprints in the finish.  So, it's best, if possible, to let
the plate finish harden for similar length of time before you start the
stringing process especially if you have individual aliquots.
Production schedules often make that difficult but if it can be planned
that way it's better.  

 

David Love

www.davidlovepianos.com

 

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