To Ream or Not to Ream?

John Ross jrpiano@win.eastlink.ca
Tue, 23 Aug 2005 19:47:08 -0300


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Hi Ric,
I found as you, that a drill is not a thing to use on a reamer.
I use a thing like the end of a drill that holds the bit. It fits in the end of a power screwdriver, or screwdriver that takes tips. I find I have more control, and do it by feel.
I like the idea of a small sand paper drum.
Is it something like the small Dremel one, or one you made?
Thanks.
John
John M. Ross
Windsor, Nova Scotia, Canada
jrpiano@win.eastlink.ca
  ----- Original Message ----- 
  From: Ric Brekne 
  To: pianotech 
  Sent: Tuesday, August 23, 2005 7:14 PM
  Subject: To Ream or Not to Ream?



  Hi John

  I used to ream, but found that unless you had a very steady drill it ended up causing at least as much damage to the hole as anything else.  For about 20 years now I've simply run a low speed drill with a sanding drum that just fits comfortably into the pin holes. I use 100 grid drum paper and the idea is simply to <<scrub>> if you will the insides of the pin hole.  Leaves a very slightly roughed surface with all traces of any burnishing, glazing, foreign substances, whathaveyou removed.  Makes for a very smooth feel to the tuning pins. I almost never find a reason to go up more then one size above the pins I've removed, but there have been exceptions. I have never used pin driving fluid and never found a need to do so myself.

  Cheers
  RicB

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I normally used to ream, before repining.
However on this latest piano, the pins were tight on removal. Sorry, I forgot to take a torque measurement.
I normally just go up one size, unless they are really loose.
I am tempted to just go up the one size, and not ream. I do use pin driving fluid.

I would like to be reminded of the pros, and cons of each procedure.

John M. Ross
Windsor, Nova Scotia, Canada
jrpiano@win.eastlink.ca

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