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Poly over Poly

 
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ladyfinisher



Joined: 21 Feb 2013
Posts: 400
Location: California

PostPosted: Sun Apr 16, 2017 5:47 pm    Post subject: Poly over Poly Reply with quote

Haven't done much poly. So I need some advice.

I have a body with a poly finish that the owner wants decals buried under the clear on. From what I hear, it's best to layer poly over poly that isn't dry yet. So, What should I do to make sure the new finish stays on the old finish?

Ladyfinisher
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CustomGuitarFinishing.com specializing in custom exotic wood guitar body and neck finishing
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Jazzmeister



Joined: 29 Apr 2007
Posts: 1440
Location: The Hawkeye State

PostPosted: Mon Apr 17, 2017 7:33 am    Post subject: Reply with quote

It's no problem as long as you scuff it. The grey scotchbrite pads are meant for that purpose. Try to get rid of any shiny spots, and you'll be fine. Another thing you can do if you're worried is to use some Bulldog adhesion promoter a few minutes before you spray the new finish. It softens the old paint to help the new stick.
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dougk



Joined: 11 Dec 2007
Posts: 9440
Location: About to lose his head in Sacramento

PostPosted: Mon Apr 17, 2017 12:05 pm    Post subject: Reply with quote

it's mechanical bond purely at this point so follow jazzmeister's advice. Scuff it up.
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ladyfinisher



Joined: 21 Feb 2013
Posts: 400
Location: California

PostPosted: Mon Apr 17, 2017 7:22 pm    Post subject: Reply with quote

I think I have some of that Bull dog stuff. I used something like that when painting the interior of an old Chevy truck. It had plastic parts that had to be painted.

Thanks for the help. Ladyfinisher
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