a Bechstein from DC

[Delwin D Fandrich]

----- Original Message -----
From: "Newton Hunt" <nhunt@optonline.net>
To: <pianotech@ptg.org>
Sent: November 21, 2001 5:57 AM
Subject: Re: a Bechstein from DC


>
> Original bluing was done with acid and an oven.  The acid promoted
> corrosion, the heat fixed and neutralized the process.  The end result
> was a coating of corrosion that blocked further corrosion and came out a
> beautiful dark blue.  This is a time consuming process.  Good firearms
> are true blued.
>
> What we see on tuning pins is more akin to paint than bluing and they
> are subject to greater corrosion than a well nickeled pin in damp
> climates.  There is a reason for using chrome and nickel in pianos.

Whose blued pins are you using? We've been using Nippon Denro pins which are
chemically blued, not painted.

Del