Measuring BR depth

[Jon Page]

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>Pianotech has a Balance rail hole reamer part # KCS-1B that will
>do the job. Keep your finger firmly on the bottom of the BR hole and
>ream until the tip of the reamer touches your finger tip.

I place the reamer in a hand-cranked hand drill and use the bench 
surface as a stop.

This tool is inserted down through the b/r bushings. Not only does it 
ream each key to
uniform thickness at the hole, it excavates any debris from the area 
on top of the hole.
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Regards,

Jon Page
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