[Phono-L] Help with Opera/1B Mandrel Finish

[Douglas Houston]

The use of gun blue on brass will give a brownish-black finish. Test it on
a scrap of brass and see if it's what you want. 


> [Original Message]
> From: Mark Lynch <markelynch at earthlink.net>
> To: Antique Phonograph List <phono-l at oldcrank.org>
> Date: 11/13/2008 10:04:39 PM
> Subject: [Phono-L] Help with Opera/1B Mandrel Finish
>
>
> Greetings,
>
> Does anyone here have experience recreating the brownish-black finish
found
> on the Edison Opera and Amberola 1B mandrel? 
>
> It appears to be a chemical finish on the brass surface as opposed to a
> plated finish. 
>
> I'd be most grateful to talk to someone who has first-hand experience or
> can refer me to the right person.
>
> Best Regards,
> Mark
> Silver Spring, M
>
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