How to Make a Car Body Lines with Bondo

Materials You’ll Need

• Bondo
• Bondo hardener
• Bondo spreader
• Sandpaper (180-grit, 220-grit, 400-grit)
• Compound
• Polishing cloth

Step-by-Step Instructions

1. Clean the Surface

Start by cleaning the area where you will be applying the Bondo with a degreaser. This will remove any dirt, grease, or wax that could prevent the Bondo from adhering properly.

2. Mix the Bondo

Mix the Bondo and hardener according to the manufacturer’s instructions. The ratio of Bondo to hardener will vary depending on the brand of Bondo you are using.

3. Apply the Bondo

Using a Bondo spreader, apply the Bondo to the surface of the car. Work in small sections, and spread the Bondo evenly.

4. Sand the Bondo

Once the Bondo has cured, sand it down smooth. Start with 180-grit sandpaper, then move on to 220-grit and 400-grit sandpaper.

5. Apply the Compound

Apply a compound to the sanded area and buff it with a polishing cloth. This will help to remove any scratches or imperfections in the Bondo.

6. Finish the Surface

Once the compound has been buffed, the surface is finished. You can now paint or clear coat the surface as desired.

Tips

• When mixing the Bondo, be sure to use the correct ratio of Bondo to hardener. If you use too much hardener, the Bondo will cure too quickly and will be difficult to work with.
• When applying the Bondo, work in small sections. This will help to prevent the Bondo from sagging or running.
• When sanding the Bondo, use a light touch. If you sand too hard, you could damage the surface of the car.
• When applying the compound, be sure to buff it in a circular motion. This will help to remove any scratches or imperfections in the Bondo.

Conclusion

Making car body lines with Bondo is a relatively simple process. By following these step-by-step instructions, you can achieve a professional-looking finish.