Using sandpaper on tuning pins.

[Shawn Brock]

MessageAl and list:
 I have never liked shimming tuning pins with sandpaper.  How ever it has always worked when I have had to use it.  The one part I strongly disagree with on this thread is the use of CA glue.  I could condone the use of CA on a piano that never stands a chance of being restrung.  I would and have used CA many times in this instance.  For a piano of any value I think twice about using CA though.  Ever try restringing a piano that has had CA used on it before?  You will have vary jumpy pins!  For all I know maybe most of you would rather put in a new block if you have to use larger pins.  Some folks are like that...  I have no problem however restringing with number 3 pins.  Un like one fellow I know, who insists that the block must be replaced if you are going to go through all the trouble of bringing the piano into the shop.  He is not against restringing in the home and keeping the same block though.  Guess I'm just backwards, I don't think I would ever want to restring a piano in someone's home...  Guess I'm straying from the subject at hand aint I?  So, all I will say is, if you or anyone is ever going to restring the piano with the same block, DON'T use CA!  If you only have one or two loose tuning pins DON'T USE CA!  If the piano is never going to be restrung (a Whitney) and has multiple loose pins, hose er down!  The stuff will work like a charm!  Just keep in mind that the future could hold consequences!

Shawn Brock, RPT
  ----- Original Message ----- 
  From: AlliedPianoCraft 
  To: Pianotech List 
  Sent: Sunday, July 20, 2008 9:44 AM
  Subject: Re: Using sandpaper on tuning pins.


  I've successfully used CA many times on really loose tuning pins. Much easier fix with no chance of breaking the becket or string. I can't see why you would do it any other way. Last, last resort, sandpaper does work, sand side to wood. Determine the grit by how loose the pin is. 80, for really loose pins, 120, for med loose & 220 for, I really should have used CA.

  Al Guecia




  From: Scott Jackson 
  Sent: Sunday, July 20, 2008 1:24 AM
  To: 'Pianotech List' 
  Subject: RE: Using sandpaper on tuning pins.


  Ron,
  It does work, if the pins are VERY loose. No need to glue anything anywhere, just roll it up grit side out, pop it in the hole and bang the pin back in. The grit will hold it in place. As for grade, I guess you could adjust depending on how much space you need to fill, but I think I've used about 200ish. Whatever works! You can also try thin (0.5mm/0.020") wood veneer if you have any handy. You would only want to use these for a pin or two, as it is very time-consuming, and you are likely to break strings into the bargain. 

  Have you read about CA glue such as at https://www.moypiano.com/ptg/pianotech.php/2000-May/subject.html#64374 ??? If this is a serious case of pin-block failure, look at wood plugs http://www.alliedpiano.com/pinblock.htm

  Scott Jackson
  Mt Keira, NSW, Australia. 



  -----Original Message-----
  From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of Ronny Boyd
  Sent: Sunday, 20 July 2008 13:54
  To: pianotech at ptg.org
  Subject: Using sandpaper on tuning pins.


  I've heard it mentioned several times that using sandpaper on loose tuning pins is the best way to go. My question is:
  Do you glue the sandpaper on the pins or? I keep thinking that as you pound the pin back in it will peel off the sandpaper.
  Also what is the best grit to use?

  Ron Boyd
  Milwaukee chapter #532



    
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