glue for hammers

Jon Page jonpage at comcast.net
Wed Jan 16 05:52:59 MST 2008


>There is a lot of talk about glue that will 'fill the gap"  Is this 
>really a good thing...

There has to be a gap of sorts to get the hammer on the shank
without damaging the center.

After I knurl the shanks, I mic them and bore the hammers .003
to .005" larger.  An exact fit will not allow for spinning-on and
fine positioning especially as the shank expands. Not to mention
the need to tweak the position due to minor boring irregularities.

Even a tight fit will allow a bit of the collar to wick in.

The collar is not there for support it's there due to the fact that it
was not wiped off at installation. Piano techs have been known to
be less than stellar woodworkers in regards to a few operations.

One which comes to mind is the glazing/shaping of the sides of
a sounding board crack with a pointed tool (fashioned from a file).
It wasn't until I saw the Spurlock sb tool that I realized the folly in
what had been the norm which basically comes down to a poor
woodworking procedure.

You wouldn't find good cabinet makers leaving glue buildup
and using poor joinery techniques.

I don't mean to get anyone all riled up, it's just the way it has been.
-- 

Regards,

Jon Page
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