So I masked off a part of the hull of the ship I want to paint, and applied primer, then paint. However, when I removed the making tape, I get a line of white primer visible on the edge. It's not because the primer seeped under the making tape, but because when the masking tape is removed, the cross section of the layering became visible.
The only way I can think to avoid this, is to not apply the primer all the way to the edge, but is there a better way?