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PostPosted: Sat Sep 30, 2017 11:41 am 
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Mahogany
Mahogany

Joined: Fri Feb 10, 2017 11:09 pm
Posts: 47
First name: Conor
Last Name: Searl
City: Duncan
State: British Columbia
Zip/Postal Code: V9L 2E5
Country: Canada
Status: Amateur
I've tried finding the answer to this on here but haven't had any luck, perhaps I'm using the wrong key words.

What causes the cloudy white spots in old-ish instrument finishes? Is it moisture getting underneath?


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PostPosted: Sat Sep 30, 2017 1:22 pm 
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Contributing Member
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Joined: Thu May 12, 2005 5:46 am
Posts: 2512
Location: United States
What was the pore filler?
If it was epoxy, it can turn a whitish gray due to blushing I believe after many years creating this type of effect. I'm currently refinishing an instrument with this problem. I also want to acknowledge here that many people use epoxy and that there may be some brands that don't blush like this. I commonly here z-poxy works and I,m sure there are others too.

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Jim Watts
http://jameswattsguitars.com


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PostPosted: Sat Sep 30, 2017 3:04 pm 
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Cocobolo
Cocobolo

Joined: Wed Feb 17, 2016 8:54 am
Posts: 155
State: Texas
Country: United States
Focus: Repair
I've seen shellac get kind of cloudy. If you heat it up with a heat gun it'll usually get rid of them. I don't know what kind of guitar inparticular you're asking about but I'm sure we can find a solution for you if we know what type of finish/guitar and such.


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PostPosted: Sat Sep 30, 2017 4:10 pm 
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Koa
Koa

Joined: Mon Jul 11, 2005 5:17 am
Posts: 655
Location: United States
My first suspicion is blushing due to moisture. Sometimes it comes out by just hand buffing it with cloth.


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PostPosted: Sat Sep 30, 2017 4:17 pm 
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Mahogany
Mahogany

Joined: Fri Feb 10, 2017 11:09 pm
Posts: 47
First name: Conor
Last Name: Searl
City: Duncan
State: British Columbia
Zip/Postal Code: V9L 2E5
Country: Canada
Status: Amateur
It's a Yamaki, with a lot of big cracks in the finish. The finish seems a little too think to be lacquer, and there's really no checking, like what I've seen in more traditional old guitars. I assume it's some sort of poly. My first guess was that moisture got in under the finish through the cracks.


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