[pianotech] Pulley Keys - was balance hole break-loose noise

[johnparham at piano88.com]

Joe,

"insert gummed travel paper into the hole and
> force the pin down on it, to hold it in place, until the glue, (it's
> actually hide or fish glue, depending on the type of gummed paper you
> have.<G>), until the glue has sets."

I like this idea, but I have a few questions about your methodology:

Specifically, how do you insert the gummed paper into the balance rail
hole.
-ball it up and stuff it in?
-roll it up and carefully insert into the hole?
-put glue in paper first or after it's in the hole?
-size the hole with a spare balance rail pin or by putting key back on
the keyframe?

Thanks,
John Parham



> -------- Original Message --------
> Subject: [pianotech] Pulley Keys - was balance hole break-loose noise
> From: "Joseph Garrett" <joegarrett at earthlink.net>
> Date: Mon, September 05, 2011 2:26 pm
> To: "pianotech" <pianotech at ptg.org>
> 
> 
> Laura asked:"You know, what about enlarging the hole and cutting a kerf or
> 2 to insert vaneer front and back. That would give new wood to the surface
> area.
>  
> Thoughts?"
>  
> Laura,
> When the hole is really traumatized, that would be my method of repair.
> However, if the hole is just pulley and glue sizing won't take care of it,
> I have two other methods: 1. insert gummed travel paper into the hole and
> force the pin down on it, to hold it in place, until the glue, (it's
> actually hide or fish glue, depending on the type of gummed paper you
> have.<G>), until the glue has sets. when the glue has se, trim flush with
> bottom of the hole.
> 2. Determine which way the key needs to go to be flush with it't neighbors.
> Break round wood tooth pick in half. Coat the pointed tip with hide glue.
> Turn the key upsidedown and lay on a hard surface. Put the point of the
> tooth pick approximately 1/16" forward of the pulley hole, (opposite of the
> direction it needs to go), and pound it into the key wood. Trim off. In
> both cases, check to see if it worked. For the former, you'll sometimes
> need more than one strip of travel paper. In the later, you will probably
> have to ease it a bit with the Yamaha balance hole tool. (don't use a file!
> DAMHIK).
> Best Regards,
> Joe 
> 
> 
> Joe Garrett, R.P.T.
> Captain of the Tool Police
> Squares R I