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MetalOne72
 Post subject: Mold?
PostPosted: Wed Feb 23, 2011 11:29 pm 
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I was going through some top wood (Sitka) that I've had for about 8-10 years and one of the sets had what appears to be mold or mildew spots on it. Has anyone seen this before? I tried to scrape down into the wood to see if it was just on the surface, and though it got lighter, it seemed to go into the wood. I know it wasn't there when I bought it. Anything I can do for it or do I chalk it up as a loss and use it as practice wood.

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Jim Watts
 Post subject: Re: Mold?
PostPosted: Wed Feb 23, 2011 11:44 pm 
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The mold I've seen on spruce before has be a blue-gray stain. I'm nor familiar with this one.

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Bob Shanklin
 Post subject: Re: Mold?
PostPosted: Wed Feb 23, 2011 11:51 pm 
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Hydrogen Peroxide usually removes mold from spruce. Most drug stores carry 3% solution, but if you can get 7% solution it is better.
Hair dresser suppliers usually carry 7% for bleaching hair.

Bob
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alan stassforth
 Post subject: Re: Mold?
PostPosted: Wed Feb 23, 2011 11:53 pm 
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Brazilian Rosewood
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That looks like a really nice piece of spruce.
Bleach?
I would not toss that.
Make it for your own git.
Mold spruce might be the next buzz-word!
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MetalOne72
 Post subject: Re: Mold?
PostPosted: Wed Feb 23, 2011 11:54 pm 
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Well my wife has some of that! But will the peroxide bleach the sound board, showing white spots?
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Bob Shanklin
 Post subject: Re: Mold?
PostPosted: Thu Feb 24, 2011 12:02 am 
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MetalOne72 wrote:
Well my wife has some of that! But will the peroxide bleach the sound board, showing white spots?


I have never had a problem with bleach or peroxide changing the color of a top set.

Bob
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nickton
 Post subject: Re: Mold?
PostPosted: Thu Feb 24, 2011 1:38 am 
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Maybe something spilled on it. I got concrete on one of mine by accident and almost threw it out but eventually managed to get it clean.

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theguitarwhisperer
 Post subject: Re: Mold?
PostPosted: Fri Feb 25, 2011 9:38 pm 
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Just call it Spalted Spruce, and charge more for the guitar!

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Old growth, shmold growth!
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MacD
 Post subject: Re: Mold?
PostPosted: Sat Feb 26, 2011 8:20 am 
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alan stassforth wrote:
Mold spruce might be the next buzz-word!

Funny you should say that...
http://www.sciencedaily.com/releases/2009/09/090914111418.htm
:)
Bri
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MetalOne72
 Post subject: Re: Mold?
PostPosted: Sat Feb 26, 2011 9:17 am 
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Great! I'll sell my set for $2000 or trade it for a nice set of Brazilian!!!
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Mark Groza
 Post subject: Re: Mold?
PostPosted: Sat Feb 26, 2011 9:44 am 
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It doesn't look like mold to me. Put some bleach on a spot out of pattern to see if it goes away. If not , it might be sap. and you might need to set the pitch by cooking the top. Mold doesn't go deep most the time and can be sanded off.
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