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| Cloudy white spots in old finish http://www.luthiersforum.com/forum/viewtopic.php?f=10137&t=49769 |
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| Author: | Conor_Searl [ Sat Sep 30, 2017 11:41 am ] |
| Post subject: | Cloudy white spots in old finish |
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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| Author: | Jim Watts [ Sat Sep 30, 2017 1:22 pm ] |
| Post subject: | Re: Cloudy white spots in old finish |
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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| Author: | DanKirkland [ Sat Sep 30, 2017 3:04 pm ] |
| Post subject: | Re: Cloudy white spots in old finish |
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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| Author: | Glen H [ Sat Sep 30, 2017 4:10 pm ] |
| Post subject: | Re: Cloudy white spots in old finish |
My first suspicion is blushing due to moisture. Sometimes it comes out by just hand buffing it with cloth. |
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| Author: | Conor_Searl [ Sat Sep 30, 2017 4:17 pm ] |
| Post subject: | Re: Cloudy white spots in old finish |
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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