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Gold Hardware Blues


crunchee

Question

Posted

I've got a '96 Hamer Archtop P-90 GT (Studio Goldtop), that has gold Schaller tuners and a gold TOM/bridge setup. I don't know if they're original or not to the guitar (yeah, the color is a bit much, but that's how I got the guitar), but I've noticed recently that they've developed brownish 'spots', especially to the top of the bridge and stoptail, and to the metal tuner buttons. I've kept the hardware and strings wiped down every time I've played it, but I haven't pulled the guitar out from my closet for playing in over a year. The frets have become tarnished, and the strings have a dirty 'flat' (as in not slick) feeling quality to them. The 'spots' on the gold hardware remind me of the mold that you'd find on cheese. Needless to say, I'm bummed. :D

Could having the guitar in the case for a very long time have something to do with the spots, the strings, and the frets? Could the ivoroid binding be causing this (the binding looks fine)? The case? It's a original Hamer TKL, BTW. Edited to add: can these 'spots' be polished out without removing the plating? I'm thinking the answer is probably not. Is there some type of protective finish or varnish to the hardware that somehow these 'spots' got under?

TIA! :D

P.S.: A friend of mine once had a very old (1930's) mandolin with the original celluoid pickguard and binding...the pickguard had started to deterioriate (binding was fine, under the nitro finish) in that crazing way that old celluoid sometimes does. He had purchased it without strings, put new mandolin strings on but left the pickguard on the mandolin, and stored the mandolin away in it's case. About a month or two later, he opened the case and found that the steel strings had been practically eaten and corroded through! The bronze strings were badly tarnished but not in nearly the shape that the steel strings were, though. The metal parts (probably pot metal?) on the mandolin didn't seem to be affected. Go figure. He took that pickguard off and stored it away, no reoccurence afterward.

6 answers to this question

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Posted

What is known as degassing.

Thanks! I couldn't remember the correct term. Is there something going on with the Hamer that sounds like degassing? I've never seen another Hamer do this...but then again I don't often let a guitar sit in it's case unopened and unplayed for over a year like this one.

Posted

Sounds like oxidation to me. How could degassing create rust? Metal plating small parts is actually easier than one would be led to believe. Most goldsmiths can replate your parts fairly easy. Guitar hardware usually fit in the small plating containers used for jewelry.

That closet may not be good for the guitar but maybe the case had some moisture in it when you put the guitar in it. Naval jelly can take off rust but it will also remove the gold plating as well. The worst case scenario is that you will be left with nickel plated hardware.

Could the moisture have come from your hands when you played it last? Most caucasians have fairly moist skin with very active sweat glands in the palms. I get ashy so my skin is usally dry but most whites are pretty greasy. Get those strings off immediately since they are most likely harboring most of the moisture and are the carriers of the oxidation agent.

Posted

Certainly oxidation in both cases, gold hardware and the strings example. Oxidation could be stimulated by degassing of course. The gas could turn the air in the case into an aggressive agent.

However, it tells of cheap pickguards and of cheap coating for the gold hardware.

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