[CAUT] reaming prior to oversize pins?

[Jim Busby]

Henry,

Whatever Ron Nossaman says. I'd do...

That being said, I don't like reamers but will occasionally resize in the piano (using the Nossaman "hovercraft" drill press) with a regular drill bit. It can be done by hand, but there is too much room for "jumping" and sway at the top; the most important part NOT to oversize.

If the piano has this problem it probably needs restringing too. You may want to do the whole nine yards.

Jim Busby BYU

From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Dr. Henry Nicolaides
Sent: Friday, April 03, 2009 9:49 AM
To: College and University Technicians
Subject: [CAUT] reaming prior to oversize pins?

Hi List,

Once again I request the wisdom of cumulative minds and experience.  Thank you for your comments about my prior questions.  I appreciate your feedback, which to date has saved me time, expense, and most of all help me solve some problems.

My prior experience rebuilding pianos generally was to replace (or shift the pin block as referenced in the new book authored by Carl-Johan Forss) the pin block since most were 50+ years old with evidence of deterioration in some form.  Some "newer" instruments I cleaned the holes as best I could with a wire rifle brush and re-pinned with #3 or #4 pins depending on torque.

I would speculate the reaming may give a better consistency one pin to another and may also elimanate any scoring caused by older pins.  I have several pianos that the pins "jump" with some that are so tight I have to extend the tuning lever all the way out and others almost move by looking at them.  Keep the block and repin or replace the block?  Budget and time are obviously a concern.  I would prefer to put the time and $'s into one more project...and when discussing these things with our director it certainly has helped to have your opinions.

Thanks and Best Regards,

Henry Nicolaides
Piano Technician, School of Music
Southern Illinois University
Carbondale, Illinois

email:  henryn at siu.edu
         drsnic4 at hotmail.com


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