Repinning flanges: Unusual discovery and solution

[Keith Roberts]

Never saw that but I have had to glue back on a couple sharps before I
lightened up.
Keith Roberts

> Removing key bushings - you need to dab little water on them, right? But
maybe they dry out a little too fast. Well, common sense will tell you that
if a little water is good, a lot is better! A good solution would be to
simply fill that nice little receptacle (key mortise) up to the top with
water! That way the key bushings get a real good soaking. Of course, you
need to keep adding water to the mortise ........ because it seems to go
away ...... somewhere. Let sit overnight. Works great. Bushings fall right
out! Anyone ever see a key with a nearly circular cross section? (I have.)
:-(
>
> Can anyone top that? Or do I get the booby prize?
>
> Terry Farrell
>
> ----- Original Message -----
> From: "David Love" <davidlovepianos@earthlink.net>
> To: "Pianotech" <pianotech@ptg.org>
> Sent: Friday, April 11, 2003 2:14 AM
> Subject: Repinning flanges: Unusual discovery and solution
>
>
> > Found an interesting thing today.  Went to tune a S&S B for the first
time
> > and found the action clickety clacking all over the place.  Pulled that
> > action to check the hammer glue joints and pinning.  Glue joints were
fine
> > so I took off a hammer/shank/flange assembly to check the pinning.
Swung
> > the flange and I think it would still be swinging if I hadn't stopped
it.
> > Eyeballed the center pin as I rotated the flange and noticed that the
pin,
> > instead of rotating in the bushing, didn't move.  I popped out the
center
> > pin which came out with some difficulty.  Testing the fit through the
> > wooden eye, the pin literally fell through of its own weight.  The fit
in
> > the bushing, on the other hand, was so tight, I was unable to reinsert
it
> > by hand.  As it turns out, the action had been repinned fairly recently.
> > Unfortunately, they got it backwards and had all the centers fitting
quite
> > snugly in the bushings and rotating quite freely in the eye.  The
flanges
> > were certainly free, and also quite noisy.
> >
> > In the process of repinning the action using broaches, I found that the
> > roughened part of the broach kept clogging with felt which reduced it's
> > cutting efficiency.  I discovered that putting a drop of Protek on the
> > bushing before inserting the broach seemed to speed up the cutting
action
> > of the broach as well as prevent the roughened area of the broach from
> > clogging with felt.  I went through the action quite quickly, repinned
the
> > whole set of flanges and only at the end began to wonder if using Protek
> > for this purpose might, for reasons unbeknownst to me, create problems
> > later on.  I couldn't imagine why it might, but, admittedly, paranoid
> > fantasies did begin to creep in.  Anyone else use this method?  And have
> > you found any problems, or benefits?
> >
> >
> > David Love
> > davidlovepianos@earthlink.net
> >
> >
> >
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