Small Bridge Pin Source

[jolly roger]

Terry,
          High quality centre pins, I believe is German silver. A mixture
of tin and brass. The tin prevents tarnish. many of the asian pins are
plated mild steel or brass, and are problematic with age. Some American
pins are brass, more prone to verdigris.
Bridge pins are usually mild steel plated with Phosphor bronze to lower
friction. Some of the Japanese companies are using brass alloys.  Koreans,
look like chrome plated steel.
There is very little standardization. and cost is probably the driving
force for selection.
If I was specing these two items, it would be German Silver for centre
pins, and Phosphor Bronze coated steel for bridge pins.
Bridge pins would not be file finished, but drilled accurately to depth.

Just my observations and opinions. FWIW.
Roger


At 06:14 AM 8/11/01 -0400, you wrote:
>Can anyone give us a good accounting of what action center pins and bridge
>pins are made of? I think Ron N suggested this as a possibility also. Thanks
>
>Terry Farrell
>
>----- Original Message -----
>From: "Richard Brekne" <rbrekne@broadpark.no>
>To: <pianotech@ptg.org>
>Sent: Wednesday, August 08, 2001 2:25 PM
>Subject: Re: Small Bridge Pin Source
>
>
>> I dont suppose you can use really large center pins ? Like say size 26 or
>so
>> ?....just a thought.
>>
>> Farrell wrote:
>>
>> > Hi folks. I am repinning the bridges on an old square grand today (or
>rather
>> > I was) when I realized I do not have the proper size pin for the treble
>> > area. The old pins were 0.068" diameter. This would be a about a #5 pin.
>I
>> > checked catalogs from Pianotek, Schaff  & APSCO and the smallest pins
>they
>> > have are #6 pins which are 0.076" diameter. It is super tight quarters
>in
>> > this area of the bridge, and I fear that using the #6 pins may cause
>> > problems. Anyone know of a source for #5 pins?
>> >
>> > Terry Farrell
>>
>> --
>> Richard Brekne
>> RPT, N.P.T.F.
>> Bergen, Norway
>> mailto:rbrekne@broadpark.no
>>
>>
>