Welcome to the Piano World Piano Forums
Over 2 million posts about pianos, digital pianos, and all types of keyboard instruments
Join the World's Largest Community of Piano Lovers (it's free)
It's Fun to Play the Piano ... Please Pass It On!

SEARCH
the Forums & Piano World

This custom search works much better than the built in one and allows searching older posts.
(ad 125) Sweetwater - Digital Keyboards & Other Gear
Digital Pianos at Sweetwater
(ad) Pearl River
Pearl River Pianos
(ad) Pianoteq
Latest Pianoteq add-on instrument: U4 upright piano
(ad) P B Guide
Acoustic & Digital Piano Guide
PianoSupplies.com (150)
Piano Accessories Music Related Gifts Piano Tuning Equipment Piano Moving Equipment
We now offer Gift Certificates in our online store!
(ad) Estonia Piano
Estonia Piano
Quick Links to Useful Stuff
Our Classified Ads
Find Piano Professionals-

*Piano Dealers - Piano Stores
*Piano Tuners
*Piano Teachers
*Piano Movers
*Piano Restorations
*Piano Manufacturers
*Organs

Quick Links:
*Advertise On Piano World
*Free Piano Newsletter
*Online Piano Recitals
*Piano Recitals Index
*Piano Accessories
* Buying a Piano
*Buying A Acoustic Piano
*Buying a Digital Piano
*Pianos for Sale
*Sell Your Piano
*How Old is My Piano?
*Piano Books
*Piano Art, Pictures, & Posters
*Directory/Site Map
*Contest
*Links
*Virtual Piano
*Music Word Search
*Piano Screen Saver
*Piano Videos
*Virtual Piano Chords
Topic Options
#2042880 - 03/04/13 02:07 PM How to fix paint cracks on plate?
AB Offline
Full Member

Registered: 04/14/05
Posts: 40
Loc: NYC
Dear piano restorers,

Is there any way to fix small paint cracks that have developed in the gold guilding of the plate? I was told that short of stripping and reguilding, which would necessitate a new pin block and restringing it will always be a visible and imperfect repair. Some people call this "cold checking" even though this may also stem from too many paint layers. This unfortunately happened in our newly restored 1888 Steinway C. It should be a warranty case but I dread the time factor..

Thanks!

Top
(ad PTG 568) Win a Year Journal Subscription
PTG 57th Annual Convention - Atlanta
#2042969 - 03/04/13 05:51 PM Re: How to fix paint cracks on plate? [Re: AB]
Nash. Piano Rescue Offline
Full Member

Registered: 12/08/09
Posts: 384
Loc: East Nashville,TN Scottsville...
One of the things I notice about piano plate re-guilding is what type of stripping method are they using before re-painting the plate.

Many old piano plates have a glass slag stuck on them from the original sand casting process. This comes from dry sand melting from the molten iron. so when you see little cracks in the paint that is usually what it is. That slag coating has cracked somewhere.

Whenever I have to strip one I make sure to Magna-Flux the bare casting to see if I missed something. Unless the builder does his own stripping that can be a big deal if the blasting company dropped the plate.

It is possible that the painter didn't add a flex agent to the paint if it was done in the colder months too. I have painted a few plates in the piano when the customer had a small budget but it's a masking nightmare and it doesn't look as good as taking the plate out.
_________________________
J. Christie
Nashville Piano Rescue
www.NashvillePianoRescue.com
East Nashville
Bowling Green, KY
Scottsville KY.
Chamber of Commerce
Member/Sponsor

Putting inspiration in the hands of area musicians
Through restoration/renovation

Top
#2042999 - 03/04/13 07:02 PM Re: How to fix paint cracks on plate? [Re: AB]
Olek Online   content
7000 Post Club Member

Registered: 03/14/08
Posts: 7219
Loc: France
are not the plate sand blasted to clean them before painting the undercoat ?

On some old plate the gliding was done with gold leaf, and the red product under there is the one that allow the gold to stick well

there are some special paints used to repair golded furniture, water based (plus minerals) they can be mixed, then a clear coat of laquer added. I always keep some gold paint when spraying a plate,it is easier than making the mix later (varnish plus bronze powder) Modern sundboard laquer is good for plates I was said, good flow and good leveling.
But plates are easy to spray (less easy to sand !)


Edited by Olek (03/04/13 07:06 PM)
_________________________
Isaac OLEG - http://picasaweb.google.fr/PianoOleg pro

Top
#2043003 - 03/04/13 07:18 PM Re: How to fix paint cracks on plate? [Re: AB]
accordeur Offline
1000 Post Club Member

Registered: 06/23/06
Posts: 1168
Loc: Québec, Canada
To the OP,

Find out what the colour and product the rebuilder used if you can. A good touch-up person can make it really nice, depending on the location and difficulty of access.

You do know that it does not affect the sound?

If you could post pictures would be most helpful.

All the best.
_________________________
Jean Poulin

Musician, Tuner and Technician

www.actionpiano.ca

Top
#2043018 - 03/04/13 08:25 PM Re: How to fix paint cracks on plate? [Re: AB]
BDB Online   content
Yikes! 10000 Post Club Member

Registered: 06/07/03
Posts: 21286
Loc: Oakland
These things patch up nearly invisibly if you can get bit of the paint that was used. Metallic paint blends very easily.
_________________________
Semipro Tech

Top
#2043212 - 03/05/13 06:02 AM Re: How to fix paint cracks on plate? [Re: AB]
Olek Online   content
7000 Post Club Member

Registered: 03/14/08
Posts: 7219
Loc: France
the metal paint is +- the easy part if you can have the good powder, but on most pianos a clear coat is added, direct shine, not buffed.

Steinways are not covered with a final clear coat, so they are easier to correct.

Usual plate paint is very similar to cars, with an undercoat (white, red, depending of the final colour expected) sprayed sparingly with a black spray so you can see the quality of the water sanding (the black paint shows where the holes are)

then a red primer if the undercoat color is not the one wanted.

The main problem is to allow everything to dry enough, polyester primer can hold water.

A plate gliding, well done, is somehow expensive due to the long prep job


Edited by Olek (03/05/13 06:16 AM)
_________________________
Isaac OLEG - http://picasaweb.google.fr/PianoOleg pro

Top
#2043645 - 03/05/13 11:06 PM Re: How to fix paint cracks on plate? [Re: AB]
AB Offline
Full Member

Registered: 04/14/05
Posts: 40
Loc: NYC
Thanks for the tips guys, I will discuss them with the responsible party.

Top

Moderator:  Piano World 
What's Hot!!
Our latest Issue is available now...
Piano News - Interesting & Fun Piano Related Newsletter! (free)
-------------------
HOW TO POST PICTURES on the Piano Forums
-------------------
Sharing is Caring!
About the Buttons
-------------------
Forums Rules & Help
-------------------
ADVERTISE
on Piano World

The world's most popular piano web site.
(ad) HAILUN Pianos
Hailun Pianos - Click for More
Ad (Seiler/Knabe)
Seiler Pianos
Sheet Music
(PW is an affiliate)
Sheet Music Plus Featured Sale
(125ad) Dampp Chaser
Dampp Chaser Piano Life Saver
(ad) Lindeblad Piano
Lindeblad Piano Restoration
Who's Online
161 registered (Abby Pianoman, A Guy, 36251, 50 invisible), 1795 Guests and 14 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
75560 Members
42 Forums
156227 Topics
2294411 Posts

Max Online: 15252 @ 03/21/10 11:39 PM
New Topics - Multiple Forums
Questioning the Wisdom of Heavy Actions
by Dwscamel
07/28/14 12:52 PM
What do you think made you passionate about music/pianos?
by Spuds
07/28/14 11:45 AM
Tune lab question
by RonTuner
07/28/14 11:32 AM
What IS this song? (And yes, I mean "song"!)
by TwoSnowflakes
07/28/14 09:35 AM
Kawai Cp200 repair needed
by Walks
07/28/14 08:52 AM
(ads by Google)

Visit our online store for gifts for music lovers

 
Our Piano Related Classified Ads
| Dealers | Tuners | Lessons | Movers | Restorations | Pianos For Sale | Sell Your Piano |

Advertise on Piano World
| Subscribe | Piano World | PianoSupplies.com | Advertise on Piano World | Donate | Link to Us | Classifieds |
| |Contact | Privacy | Legal | About Us | Site Map | Free Newsletter | Press Room |


copyright 1997 - 2014 Piano World ® all rights reserved
No part of this site may be reproduced without prior written permission