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 Post subject: SMELLY FINISH
PostPosted: Fri Dec 09, 2011 10:20 am 
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Walnut
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Joined: Fri Dec 09, 2011 9:34 am
Posts: 2
First name: Doug
Last Name: Rose
City: TOPEKA
State: KS
Zip/Postal Code: 66605
Country: U.S.
Focus: Repair
Status: Amateur
Last year I was happy to find an Eastman John Pisano signature model AR-880 archtop on the used rack at a local music store. It retails for $2,500 but was on consignment for $1,500. I couldn't believe someone would buy that guitar (2008 model) and sell it so quickly. I checked it out, loved it and bought it.

After getting it home, adjusting the bridge position and height, replacing the light strings with medium Gibson jazz strings, I was thrilled with it and it quickly became my second favorite after my Marthin HD-28. So, the problem.... I noticed a funky smell whenever I picked it up that I didn't notice at the store. It's like that smell when you leave a wet rag in a bucket for a couple weeks then go back to wash your car and have to throw it away because it became moldy and musty.

For a while I thought it was coming from inside the guitar and figured it would air out. Unfortunately, over time I realize the smell is in the finish. I don't finish guitars, so my question is: Can old laquer or finish become musty with age, and if used on an instrument, is it permanent? The guitar is left out on a stand all the time for the last year but still smells. My obvious choices are sell it, refinish it or live with it. I don't like any of these choices. gaah


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 Post subject: Re: SMELLY FINISH
PostPosted: Fri Dec 09, 2011 10:56 am 
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Brazilian Rosewood
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Joined: Thu Feb 12, 2009 12:12 pm
Posts: 3308
First name: Bryan
Last Name: Bear
City: St. Louis
State: Mo
Country: USA
Focus: Build
Status: Amateur
Are you sure it is the finish? I have a guitar that sometimes smells when I have been playing it for a while; I suspect it is the fretboard wood and my hands don't agree.

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 Post subject: Re: SMELLY FINISH
PostPosted: Fri Dec 09, 2011 12:39 pm 
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Koa
Koa

Joined: Sun Mar 09, 2008 8:08 pm
Posts: 882
Do you store it in a case between playing. Some case liner glues can smell.

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 Post subject: Re: SMELLY FINISH
PostPosted: Fri Dec 09, 2011 6:55 pm 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Fri Apr 02, 2010 10:35 pm
Posts: 2561
Country: USA
Focus: Repair
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It was owned by a smoker, most likely. Nitrocellulose laquer absorbs nicotine.

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 Post subject: Re: SMELLY FINISH
PostPosted: Tue Dec 27, 2011 10:36 am 
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Walnut
Walnut

Joined: Fri Dec 09, 2011 9:34 am
Posts: 2
First name: Doug
Last Name: Rose
City: TOPEKA
State: KS
Zip/Postal Code: 66605
Country: U.S.
Focus: Repair
Status: Amateur
Thanks all for the good info. Sorry for late reply, as I was gone for the holidays. To answer a few of you;

- I leave it out of the case on a guitar stand all the time. The case has no odor.
- It smells as soon as I pick it up off the stand and before my hands touch the fretboard.
- I've polished it several times with Martin polish, which I thought would remove any smell not imbedded into the finish but it still smells moldy.
- It's never really smelled like old cigarettes, which has its own unique odor. This smell is like a moldy old wet mop or a sponge that's ready to be tossed.

Very weird.


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 Post subject: Re: SMELLY FINISH
PostPosted: Tue Dec 27, 2011 11:17 am 
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Koa
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Joined: Thu Aug 25, 2005 4:49 pm
Posts: 1209
Location: Ukiah, CA
The smell could be coming from the inside of the guitar. Since the guitar has electronics, this repair might not work, but it's worth a look. http://www.frets.com/FRETSPages/Luthier/Quickies/RiceClean/riceclean.html

At least you know why they sold the guitar, but you might not want to get rid of the smell. Mold is the olfactory equivalent of patina. Might be a selling point if you decide to unload it.

Febreze?

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 Post subject: Re: SMELLY FINISH
PostPosted: Tue Dec 27, 2011 11:48 pm 
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Koa
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Posts: 678
First name: Eric
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City: Ben Lomond
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DROSE051156 wrote:
Thanks all for the good info. Sorry for late reply, as I was gone for the holidays. To answer a few of you;

- I leave it out of the case on a guitar stand all the time. The case has no odor.
- It smells as soon as I pick it up off the stand and before my hands touch the fretboard.
- I've polished it several times with Martin polish, which I thought would remove any smell not imbedded into the finish but it still smells moldy.
- It's never really smelled like old cigarettes, which has its own unique odor. This smell is like a moldy old wet mop or a sponge that's ready to be tossed.

Very weird.


Have you looked inside? I had a 1924 Santos Hernandez in my shop recently that had suffered from some sort of interior mildew in its past. The problem was dealt with years ago, and at this point there is no odor or damage, but there is still visual spotting inside the guitar. If there is evidence of mold inside, I'd start with the rice treatment that has been mentioned, and then try fumigating with chlorine or sulphur dioxide. (Note: I haven't done this. Be sure to do a test first, to see how these treatments affect glues and finishes.)


Last edited by Eric Reid on Wed Dec 28, 2011 1:56 am, edited 1 time in total.

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 Post subject: Re: SMELLY FINISH
PostPosted: Wed Dec 28, 2011 12:06 am 
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Koa
Koa
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Joined: Thu Oct 22, 2009 1:59 am
Posts: 678
First name: Eric
Last Name: Reid
City: Ben Lomond
State: CA
Zip/Postal Code: 95005
Country: USA
Status: Professional
Filippo Morelli wrote:
On Joe's comment I'll go one step further. I've seen cases ruin two guitar finishes - one was french polish.

When you get a new case, I suggest letting it sit open in sunlight for a few days. Give a chance for all that stuff to gas out.

Filippo


Are you sure that the problem was the case out-gassing? I haven't run across this. Were these new finishes? Did the case get warm? If these were old guitars in new cases, and not warmed, can you (p.m.?) mention the brand? I don't want to blacklist any case suppliers, but I'd like to be aware of potential problems.


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 Post subject: Re: SMELLY FINISH
PostPosted: Fri Dec 30, 2011 9:16 pm 
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Brazilian Rosewood
Brazilian Rosewood

Joined: Thu Feb 12, 2009 10:27 pm
Posts: 2109
Location: South Carolina
First name: John
Last Name: Cox
Focus: Build
Status: Amateur
As a couple others here have mentioned... Musty wet socks smell is classic mold/mildew inside the guitar smell....
It can happen real easy... Get water inside the guitar and then shut it up inside the case.... Even an overfilled in-case humidifier can slosh some water out.... You may not even know it happened - especially if it lived in the case a whole lot....

I would stay away from any sort of chlorine fumigation - it bleaches the heck out of everything... Also makes wood and other organics massively crumbly... Any application of bleach would fall within this category...

Can you stick a mirror up inside the guitar and look for fuzzy spots?

Thanks


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 Post subject: Re: SMELLY FINISH
PostPosted: Sat Dec 31, 2011 10:36 am 
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Koa
Koa

Joined: Mon Dec 18, 2006 9:42 am
Posts: 1584
Location: United States
Dead mouse.


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