[pianotech] Verdigris in Action Centers

[Pianoman]

Anyone know where a zapper can be purchased?
James
James Grebe
Since 1962
Piano Tuning & Repair
Creator of Handsome Hardwood Products(
314) 608-4137   1526 Raspberry Lane   Arnold, MO 63010
Researcher of St. Louis Theatre History
BECOME WHAT YOU BELIEVE!
www.grebepiano.com
----- Original Message ----- 
From: "Don Mannino" <donmannino at ca.rr.com>
To: <pianotech at ptg.org>
Sent: Tuesday, December 30, 2008 4:07 PM
Subject: Re: [pianotech] Verdigris in Action Centers


> David,
>
>
>
> 4 possible solutions:
>
>
>
> 1. Wash and lube. Quickest. Apply Dry-cleaning solution (VMP Naphtha)
> followed by some form of lubricant. Temporary.
>
> 2. Wash and repin. More work. Disassemble parts, wash the wood and 
> bushings
> with Naphtha, blow them out with low-pressure compressed air, burnish / 
> ream
> with broaches, repin.  Longer lasting, but still temporary.
>
> 3. Evaporate, wash, and repin. Some have had success with parts only
> containing the original waxy goop (which is likely very rare by now - most
> have been lubricated with something over the years to try to free them 
> up).
> You can try "Zapping" them in place, as with the original Francis Mehaffy
> zapper, then lubing the parts.  Or disassemble them, zap the bushings
> separately, then dry-clean and repin. Still temporary, in my experience,
> although some proponents claim it is permanent.  I think permanence in 
> this
> case might equal "I never heard back from them."  Anybody have a zapper 
> they
> want to send to David to try??
>
> 4. Replace the parts (of course). Expensive but permanent.
>
>
>
> Recommendation: Inform the piano owner that anything short of replacing 
> the
> parts will most likely be temporary, and write it on your receipt.  Have
> them sign a copy, and keep it in your files.  I have had customers sell
> pianos I did temporary jobs on, and tell the buyer that it was completely
> rebuilt and warranted by me!
>
>
>
> Don Mannino
>
>
>
>
>
> From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On 
> Behalf
> Of Paul Kunz
> Sent: Tuesday, December 30, 2008 7:29 AM
> To: pianotech at ptg.org
> Subject: [pianotech] Verdigris in Action Centers
>
>
>
> Greetings:
>
>
>
> I am wondering what the latest recommendations are for severe verdigris on
> old Steinway Action Centers.  Reaming and repining has never to my mind 
> been
> a permanent solution; therefore in the past I have tended to replace
> whippens and shanks.  However, in a very old Steinway when the customer is
> not willing to spend the money, and repining appears to be only temporary
> and time consuming, what type of chemical treatment has been found to be 
> the
> most effective.
>
>
>
> Any suggestions would be greatly appreciated.
>
>
>
> Thank you,
>
> David C. Kunz
>
>