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U-Pol is the best I have found for going over a water based paint for a out of can top coat. You could probably use it over spray bombs too. Pretty tough stuff. You can us it as a top coat but will not last as long as epoxy but pretty darn durable. Mike, fishing freak was the discoverer of that.I used to use it a s a scratch coat over Createx before epoxy but later found that sys. 3 clear coat worked just as good over straight Createx and is what I do nowadays. I never wipe my plugs with anything other than a dry paper towel before epoxy. I install my belly grommets and my nose grommet before epoxy. You need to be very careful not to touch the plug with your hands or you may get some smegma on them and the epoxy won't adhere. I never touch plugs after painting with naked skin. I use disposable gloves or do all my handling with paper towels between my fingers and plugs. Installing grommets can be tricky without touching plug but you get the hang of it after a while. That is why some like to use a scratch coat as they like to assemble before epoxy and all the touching of plug during assembly will leave oils from skin on the paint. If you use a scratch coat you can then scotch brite the scratch coat and then wipe with alcohol the clean off scotchbrite dust and oils from handling. I prefer to eliminate that whole process, but I did it for a while. The down side to u pol is if you spray that in the house you will be sleeping in your car for a while. Got a smell that can end a marriage.
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