Prep for Untreated Steel, Galvanized Steel and Bare Aluminum: All bare metals must be treated with a high quality epoxy primer prior to the application of Feather Fill. Follow paint company’s recommendations for surface prep and recoat of epoxy primer.
Prep for Pre-Painted Surfaces: Sand repair area and featheredge using 180 grit, 220 grit and finish with 320 grit sandpaper on a random orbital sander. Final clean with a quality wax and grease remover to remove sanding residue prior to applying Feather Fill.
Prep for Body Filler or Putty: Finish sanding body filler or putty with 180-220 grit sandpaper. Featheredge with 320 grit sandpaper. Blow off the surface with an air blow gun.
Mixing: Shake and stir thoroughly before mixing. Add one tube (.75 fl. oz.) liquid hardener to one quart of Feather Fill or 2% by weight and mix thoroughly. Pot Life is 35 minutes @ 75°F (24°C). Do not leave product in the spray gun for longer than 45 minutes.
Application: Use a primer gun with a 1.7 to 2.2 fluid nozzle/air cap (Spray at paint gun manufacturer’s recommended air pressure). Apply 2-3 medium wet coats allowing 5-10 minutes flash time between coats.
Finish: Ready to sand in 75-90 minutes depending on film build. Applying over self-etch primer could add 4-6 hours to the dry time. Once dry sand Feather Fill with 400-600 grit sandpaper prior to next step.