Wurlitzer C173 (Young Chang) - lifting logo

[Marcel Carey]

Hi Mike,
 
Considering the work, I don't think I would want to do it either. These
pianos are so unstable as is even after they settle that I would really
hate disturbing it's "tuning stability" just for cosmetic purpose. The
ones I have seen that want to come off, I just tear what's there to
tear. I had a case where the decal curled so much that it was contacting
the strings and buzzing. I just used tweezers and pulled it off.
 
Marcel Carey, RPT
Sherbrooke, QC

-----Message d'origine-----
De : pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] De la
part de Mike McCoy
Envoyé : 2 novembre 2006 11:35
À : Pianotech List
Objet : Re: Wurlitzer C173 (Young Chang) - lifting logo


I had this as well. Wasn't sure what glue to use either but went with a
medium CA, applied with applicators from a hobby shop (4" plastic with
brush or round applicator tip), and held the decal down briefly with the
Spurlock soundboard tool as you were thinking. Still attached a year
later.

 Here is the  procedure I received from Samick at the time, but this
requires removing strings.My cust wasn't interested in paying to have it
done correctly.


Repairing a peeling Samick soundboard decal

In some rare cases where Samick decals have begun blistering or lifting
we recommend the following procedures for repair.
Clean the soundboard of any dust or dirt.  Thoroughly vacuum up as much
dust as possible



It is usually easier to remove strings around the sound board decal. As
few as 3, usually 8 to 10 strings should be removed.  Use caution, or
remove dampers around the area.  Carefully lower tension on the tenor
strings enough to remove them from the hitch pins and pull them aside.
Hold the strings out of the way with a piece of wire (copper preferred,
if available) or pull out of the way with string without removing from
hitch pins when possible.  

 

In low temperature conditions it may be necessary to warm the old decal.
Using a hot hair dryer (not a heat gun) warm the decal.  Slowly peel off
the old decal while it is warm.  Clean the area with naphtha (NOT
lacquer thinner or acetone based cleaners or thinners), paint thinner
might soften some nitrocellulose finishes; use caution.

Soak the new decal in water until soft (about one minute).  Wet the
sound board around the decal position.  Carefully slide the new decal
into position.  Blot dry and allow to dry thoroughly at least 2 hours
(over-night preferred).

After the decal is thoroughly dry carefully peel away the clear backing
leaving the decal ink on the soundboard.

Apply a clear coating of lacquer, allow to dry.

Replace strings and tune.

With a pressure sensitive decal:

Carefully position the new decal in the same location as the old decal.
Remove the backing and apply the decal from one edge avoiding bubbles.
Press firmly all around.



Reseal the new decal with a light coating of lacquer.

Reinstall the strings aligning to the hammers.  Reinstall the dampers if
they were removed and regulate.

Retune the piano.

Phil Glenn, RPT

Samick Technical Service Manager



 

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