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 Post subject: Cleaning Corrosion From Oxidized Bronze
PostPosted: Tue Dec 04, 2018 7:27 pm 
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Victor V
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Joined: Thu Jan 08, 2009 2:33 pm
Posts: 2596
Location: Near NY's Capital
I’m hoping someone may have an answer here. My VV 8-7 has this weird corrosion on the tonearm. Any good ways to clean it off? I obviously don’t want to try anything harsh. I wiped it down with ammonia which did nothing. Anyone?

Sean


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 Post subject: Re: Cleaning Corrosion From Oxidized Bronze
PostPosted: Tue Dec 04, 2018 8:25 pm 
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Victor IV
Joined: Mon Aug 24, 2009 3:08 pm
Posts: 1960
Location: Harrison Township, MI
Most likely, the corrosion is not "on" the oxidized finish, but through it. Down to the brass beneath. If you could remove the oxidation, I don't believe the finish would look any better. My guess is, that it would look worse. Is that tone arm specifically for an 8-7, or might there be a better example out there?


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 Post subject: Re: Cleaning Corrosion From Oxidized Bronze
PostPosted: Tue Dec 04, 2018 8:50 pm 
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Victor V
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Joined: Thu Jan 08, 2009 2:33 pm
Posts: 2596
Location: Near NY's Capital
I'm not sure this is a "standard" size. I've had this 8-7 for maybe 5 years now and I'm just now starting to get back into getting it done. This machine, along with a few others here have been sitting unfinished for far too long!

Sean


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 Post subject: Re: Cleaning Corrosion From Oxidized Bronze
PostPosted: Tue Dec 04, 2018 10:13 pm 
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Victor III
I've got both kinds of music--classical & rag-time.
Joined: Fri Oct 06, 2017 11:39 am
Posts: 633
Location: South Carolina
There has got to be a way to get that finish back on there, without swapping the tonearm...anyone have an idea how they did it back then?


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 Post subject: Re: Cleaning Corrosion From Oxidized Bronze
PostPosted: Tue Dec 04, 2018 10:20 pm 
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Victor VI
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Needle Tins are Addictive
Joined: Fri Jul 09, 2010 8:32 pm
Posts: 3616
Location: Belmont, North Carolina
You might want to try 0000 steel wool soaked with WD-40. I have removed corrosion from other metal this way, but not sure about this tonearm. If you do it lightly it might not remove the original oxidation. If it does, you could re-oxidize the brass with gun bluing or a similar chemical to re-touch the color...

I wanted to ask a question regarding a Columbia coin-op AS. Are the cabinet keys that lock the end of the glass cover universal or were they individually made? I have locks and keys for the front panel and the coin box, but only have the lock and no key for the single lock on the right side of the cover. Is it possible to find a key for these?

Curt
"The phonograph† is not of any commercial value."
Thomas Alva Edison - Comment to his assistant, Samuel Insull.

"No one needs a Victrola XX, a Perfected Graphophone Type G, or whatever you call those noisy things."
My Wife


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