Answer
Mar 17, 2025 - 11:13 AM
- To use 3M body filler, first wash surface with soap and water to remove water soluble contaminants. Follow the soap and water wash with an appropriate wax and grease remover for removal of surface contaminants.
- Next, sand the surface with grade P80 abrasive, then blow off with clean dry compressed air and re-clean the surface. Apply the body filler and 2% cream hardener to a clean mixing surface using a plastic spreader. A good starting point is to lay out a 3 inch diameter circle of filler, then lay a 3 inch ribbon of cream hardener across the filler. Mix the body filler and cream hardener thoroughly, to a uniform color. Spread the filler on the mixing board, being sure to break any air bubbles that were introduced during mixing.
- Apply a thin layer to the repair area using firm pressure to ensure maximum adhesion being sure to “wet out” the surface completely. Apply additional filler in layers, building up the damaged area higher than the surrounding surface. Maximum filler thickness should not exceed 1/4 inch. Allow curing time of 20 minutes.
- Sand the filler to the proper contour with 3M™ abrasives, using the following recommended grade sequence: P40, P80, P180.
- Wait approximately 45 minutes before applying primer and paint.
