[CAUT] bridge-pin experiment

[Richard Brekne]

I agree that the addition of CA cleans up a lot of the classic false 
beat... but I remain very unconvinced as to why.  Couldnt resist doing 
my own experiment when I read the first post on this thread.  I took 
three very badly beating strings on 30 year old Petrof that responded to 
the screwdriver pressure,  loosened the string and  removed the pins. 
First I put in very undersized new pins and tuned up again.... 2 of the 
three false beats got way cleaner... one came out perfectly clean... the 
third was about the same.  Then I  removed the strings again and with 
the undersized pins still in soaked the holes with CA... I mean I really 
soaked them suckers.  I waited about 10 minutes and pulled the 
undersized pins which and reamed out the holes to their origional size.  
Then put back in the original pins.  Replaced strings, tuned up and all 
three were clean as a whistle.  Strikes me that the addition of CA is 
affecting the wood itself more then anything else.

Cheers
RicB


    Ah, yous guys is finally startin to listen,
    BUT, it will not cure all, BUT it sure makes the unison cleaner and
    much easier to work with in voicing.
    Strings can exhibit false beats when
    Bridge pins are loose,
    kinks in speaking length,
    rust pits in speaking length
    Notching faulty,
    waste end not muted,
    purpousful design of the manufacture to make the piano sound louder,
    speaking length has been stretched too far
    so that there are thin unequal segments,
    mouse rust spots,
    others? I'm sure there are.