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Pmaj7
PostPosted: Wed Dec 09, 2020 2:27 am 
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I've got what looks like marks from a vinyl strap in a Gib335, but can't confirm that's what it is. The affected area seems to take a mark from a fingernail whereas the unaffected areas do not. Is this something that can be sanded and buffed out?

Pat

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Chris Pile
PostPosted: Wed Dec 09, 2020 8:04 am 
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Some of the vinyl and plastics used in straps reacts badly with lacquer, making it soft. Make sure the strap doesn't not lay against the surface of the guitar (especially in the case), and let it reharden before attempting any finish touch-ups.

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These users thanked the author Chris Pile for the post: Pmaj7 (Wed Dec 09, 2020 3:02 pm)
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Pmaj7
PostPosted: Wed Dec 09, 2020 3:03 pm 
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Chris Pile wrote:
Some of the vinyl and plastics used in straps reacts badly with lacquer, making it soft. Make sure the strap doesn't not lay against the surface of the guitar (especially in the case), and let it reharden before attempting any finish touch-ups.
Do you think that it would definitely reharden? Client said he noticed it a couple months ago...

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Chris Pile
PostPosted: Wed Dec 09, 2020 3:51 pm 
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Hard to say. In my experience, the longer the contact - the longer the finish stays squishy.

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John Arnold
PostPosted: Wed Dec 09, 2020 7:45 pm 
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If it does not reharden, you may have to scrape it off and drop fill with new lacquer.

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Chris Pile
PostPosted: Thu Dec 10, 2020 12:50 am 
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John is correct - scrape, not sand.

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Pmaj7
PostPosted: Thu Dec 10, 2020 1:01 am 
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Thanks everybody! Good news, it sanded out and buffed nice. It wasn't super gummy, just a little softer than the surrounding area. Probably still is, but I did not want to put my fingernail into test it LOL.

New problem: the Pat buff area is shinier than the Gibson buff! Sigh.... Maybe because lacquer has sunken back?

+1 on the Kovax papers that some have recommended. Great stuff!

Pat

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Chris Pile
PostPosted: Thu Dec 10, 2020 8:12 am 
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Yes - a common problem when touching up new areas on old finishes. After it hardens up a bit, I try to "age" the new finish a bit to blend by using very light pressure and some fine gray Scotchbrite until it matches a little better.

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