Dennis --- Getting back to your original question: I use 3M Automotive Performance Masking Tape. It's green in color. You can get it at almost any auto parts store (like AutoZone, Advance Auto Parts, O'Reilly, etc.) The 1/4" wide tape is good for curves as long as the radius isn't too small, and I use the 3/4" wide stuff for everything else. I don't seal the edge with clear, but I do go over every edge with the handle of my knife (just a blunt metal object.) I have never had any bleed under the tape, but I do spray several light coats. I don't know how it would perform if you brushed.