reaming pinblocks

[Lorlin D. Barber]

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On my recent visit to Havanna Cuba w/the Piano Brigade, Paul Larudee
<larudee@pacbell.net> told me about a patent he has on tuning pins that are
oversized in the lower portion and standard 2/O in the upper half.  The idea is
to have control over a fine tuning after restringing with oversized pins.  I am
not familar with Denro's - if that is his patent, please forgive my ignorance.
It may be worth while asking Paul about them.  Please say hola to him for me if
you do.

Best Regards,

LB

Roger Jolly wrote:

> Hi Mark,
>              Hand reaming with a .010 undersize drill in a good quality tap
> wrench, gives about 140lb torque, and is very consistent.  You will need to
> tighten the wrench in the vice to prevent the drill from slipping in the
> wrench.A little tiring on the wrist and arms but well worth the effort. Do
> a section and go for coffee type of job. <g>
> Roger
>
> At 02:41 PM 11/03/00 -0600, you wrote:
> >
> >I am restringing a 60's Yamaha G-3.  Someone previously re-pinned this
> >instrument with 3/0's!  That's a jump from .272" (originals) to 286"
> >(Denro's), you can imagine how it tunes!  The block is in (otherwise) fine
> >condition, it is fully fit (glued to stretcher), and at this point, I don't
> >plan on replacing it.
> >
> >I haven't done much reaming, and would like advice from those of you who
> >have.  Information I would like includes:
> >
> >Purchase reamers from who, (Pianotek)?
> >
> >What size?  Ream to .004" less than pin diameter, or more?  (I will repin
> >with 4/0 Denro's)
> >
> >Ream by hand presumeably?  Use what to hold the bit, guide the angle?
> >
> >Advice on technique, do's and don'ts?
> >
> >BTW, we may all know this, but just in case, Yamaha (and other makers) offer
> >up-size replacement tuning pins for the purpose of restringing.  There are
> >two (metric) sizes available between the originals and our standard 2/0
> >(.282").  They're more costly, but work very well.
> >
> >Many thanks,
> >Mark Cramer
> >Brandon University
> >
> >PS   Scott, the CAUT page looks great, Jim's "wisdom" is a real keeper.
> >Anyway you could add my name to the list?
> >
> Roger Jolly
> Saskatoon, Canada.
> 306-665-0213
> Fax 652-0505

--
Barbers Piano Service, Inc.
Phone No. 515-274-5940
Website: http://www.commongroup.net/barberspiano


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