Joined: Oct 2018
Posts: 2,182
Likes: 1,055
From: Columbus, OH
Bikes: Pake C'Mute Touring/Commuter Build, 1989 Kona Cinder Cone, 1995 Trek 5200, 1973 Raleigh Super Course FG, 1969 Raleigh Superbe, 1986 Miyata Nine : 1960/61 Montgomery Ward Hawthorne "thrift" 3 speed, by Hercules (sold), 1966 Schwinn Deluxe Racer (sold)
[MENTION=175113]thook[/MENTION]
I recently picked up my own used frame with obvious overspray on the left side chainstay. I watched a couple of YouTube videos about removing overspray without rubbing compound and BAM! I'm an expert on using a clay bar!
J/k but auto detailers use them to perfect the finish on show cars. The logic behind it is simple enough, and a few tutorials will help you learn too. I think the key is using a lubricant on the finish (like soapy water) , and using a clean section of clay to avoid dragging contaminants across the finish and scratching it up.
Overspray is essentially a paint job on an unprepared surface, so the overspray can't hold onto the top coat as well as the top coat holds onto a scuffed undercoat.