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Undercoat issues
Hello, after reading success stories I bought and sprayed 3m aerosol undercoating on my under cab. I had degreaser wire wheeled and sprayed with etch primer. I sprayed the undercoat 3 days ago and it is still soft and scrapes off with your fingernail. Is there a remedy can I paint something over it to make it hard?? I sprayed krylon on it and it still scraped off. Thanks
1963 c10
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