McLube on keybeds (Was Re: [CAUT] Teaching Piano Tuning)

[David Ilvedson]

Boaz,

Try micro-fine teflon powder on the keybed.   Great on knuckles.   I haven't used graphite in a long time for anything...well bridge tops...

Bill Spurlock has it... Google his website

David I.


----- Original message ---------------------------------------->
From: Boaz Kirschenbaum <artisanpiano@gmail.com>
To: David Vanderhoofven <david@vanderpiano.com>, <caut@ptg.org>
Received: Sat, 13 Nov 2004 10:54:50 -0500
Subject: Re: McLube on keybeds (Was Re: [CAUT] Teaching Piano Tuning)

>David,

>I was specifically referring to McLube 444L (the liquid stuff in the
>can, from Pianotek). I experienced problems with its use as a keybed
>lubricant, especially where the back corners of the keyframe meet the
>keybed. It can cause a squeak at unacorda shift later on, i.e., after
>a few days or weeks.

>In my opinion McLube 444L  is to be used for unlike materials, such as
>keypins and keybushings, and not for like materials, such as wood to
>wood.

>I usually didn't need to lubricate the keybed at all in most cases.
>The general keyframe fitting and planing of the keyframe is done by
>hand at the factory. At the final prep, it was more a matter of
>fine-tuning the keyframe bedding, especially at the season/environment
>change, re-checking the keyblock fit, and making sure that the shift
>setting was correct.

>In some cases if lubrication was needed I used a graphite stick at the
>stud contacts, burnished to a sheen with an old hammer.

>-Boaz


>On Fri, 12 Nov 2004 09:01:36 -0600, David Vanderhoofven
><david@vanderpiano.com> wrote:
>> Hi Boaz,
>> 
>> I appreciate your knowledge and experience and am enjoying reading your emails.
>> 
>> You mentioned that a Steinway piano should NOT have McLube on the
>> keybed?  I have found McLube to be wonderful for lubricating keyframes and
>> keybeds, because it eliminates squeaks.  I respect your opinion, but I am
>> wondering why you do not like McLube on keybeds.  Is it harmful?  Or are
>> there any problems with the use of McLube?  What would you suggest as an
>> alternative to McLube on keybeds?
>> 
>> Thanks!
>> David Vanderhoofven
>> Joplin, MO
>> 
>> At 08:45 AM 11/9/2004, you wrote:
>> >---------- Forwarded message ----------
>> >From: Boaz Kirschenbaum <artisanpiano@gmail.com>
>> >Date: Tue, 9 Nov 2004 09:35:46 -0500
>> >Subject: Re: [CAUT] Teaching Piano Tuning
>> >To: Fred Sturm <fssturm@unm.edu>
>> >
>> >If someone is spending that kind of
>> >money, they shouldn't have a squeaking pitman, a knocking keyblock, or
>> >McLube on the key bed!
>> 
>>
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