I have been ask to explain edge feathering, so I thought it would be good to have it in here. So here it is!
Edge feathering is a method used in multi-color painting to reduce the build-up of an edge from one color to the next. This is done by masking off your base coat leaving only the area you want a different color exposed. Once you have that area exposed, prep it for paint buy wet sanding, cleaning, and wiping down with tack cloth or lint free cloth. After the prep is done lay new masking tape over the line reducing the size by 1/8”, making the area to be painted smaller. Do this with two or three layers. Once you have the tape laid you can clean and tack again, then paint a few passes over that area. While the paint is still wet, remove the top most layer of tape revealing a 1/8” unpainted line. Allow the fresh paint to dry, then paint another coat and remove another layer of tape. Do this until you get to the last line of tape that will be your final edge. Once you paint that coat, hit it with a bit of clear (if your painting gloss finish) and remove that tape while the paint is wet. Allow this all time to cure….NOT DRY…..CURED!!! After a full cure, you can wet sand the entire part, sanding perpendicular to you transition line will help fade the buildup line and make it all flow smooth. Be careful not to sand too much and do this with 2000 grit. If your entire finish is to be gloss, then after you wet sand, prep and follow with your clear coat, 2k clear will work best!