How to Mix Car Body Filler

Materials You’ll Need

• Car body filler
• Hardener
• Mixing board
• Spatula

Step-by-Step Instructions

1. Prepare the Mixing Board

Place the mixing board on a flat, level surface. Cover the board with a thin layer of body filler to prevent the filler from sticking to the board.

2. Measure the Body Filler and Hardener

Using a spatula, measure out the desired amount of body filler and hardener. The ratio of body filler to hardener will vary depending on the type of filler you are using. Refer to the manufacturer’s instructions for the correct ratio.

3. Add the Hardener to the Body Filler

Slowly add the hardener to the body filler while stirring constantly. Use a spatula to mix the two components together thoroughly.

4. Mix the Filler and Hardener Until Smooth

Continue stirring the filler and hardener until the mixture is smooth and free of lumps. The mixture should be of a creamy consistency. If the mixture is too thick, add a small amount of acetone. If the mixture is too thin, add a small amount of body filler.

5. Apply the Filler to the Repair Area

Once the filler is mixed, apply it to the repair area using a spatula. Spread the filler evenly and smoothly over the area.

6. Allow the Filler to Cure

Allow the filler to cure for the amount of time specified by the manufacturer’s instructions. The curing time will vary depending on the type of filler you are using.

7. Sand the Filler

Once the filler has cured, sand it smooth using sandpaper. Start with a coarse grit sandpaper and gradually move to a finer grit sandpaper until the filler is smooth and flush with the surrounding surface.

Tips

• Use a clean mixing board and spatula.
• Mix the filler and hardener thoroughly.
• Apply the filler to the repair area immediately after mixing.
• Allow the filler to cure for the full amount of time specified by the manufacturer’s instructions.
• Sand the filler smooth and flush with the surrounding surface.

Conclusion

Mixing car body filler is a relatively simple process, but it is important to follow the instructions carefully to ensure that the filler cures properly and provides a strong and durable repair.