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A pro did that and let it out the door? Mmm I'd be taking it back like suggested, but I wouldn't be to friendly about it, as above it looks like he painted it with crap he scraped of the floor or used his overfill jar of tailendings, or he doesn't know how to set his gun, ya can get the same effect if the clear isn't atomizing properly and globs..I wouldn't be a happy chappy and I'd suggest to him that he fixes it or pays for the signs artwork..Good luck and hope ya get it sorted.
Thanks, I am thinking of using 1500 then 2000, then buff it out if that fails , then I will start overJust be careful wet sanding. You dont know how "thin" the clear is, and its possible to burn through