Key Clamping Jig

[Michael Gamble]

Hello David
Nice one! Another use for rusty springs. This is called "re-cycling". :-)
Regards
Michael G.(UK)
----- Original Message ----- 
From: "David Love" <davidlovepianos@comcast.net>
To: "'Pianotech'" <pianotech@ptg.org>
Sent: Thursday, April 14, 2005 4:51 AM
Subject: Key Clamping Jig


>      
> Attached are the photos.  These are simple trap springs screwed into a
> long piece of pin block scrap which has been screwed down to a slab of
> something I had laying around.  The pin block material is shimmed up off
> the deck to allow the lip to slip under.  Once the key is placed under
> the clamp I depress the spring slightly while holding the key.  The
> release of tension on the spring pulls the key slightly toward the pin
> block stop as otherwise there is tendency for the key to drift back
> while the keytop remains stationary and a gap can form at the front.  As
> you can see, you can also use this for clamping a set of sharps.  If you
> install tops without fronts, you could make the jig with a stop for the
> keytop recessed whatever distance you want underneath and behind the
> line of the larger stop for the key front.  That way you can index the
> same amount of overhang of the key top for each key.  Since I don't
> install keytops without fronts I didn't bother to do that.  
> 
> David Love
> davidlovepianos@comcast.net 
>