How to Apply Bondo: 8 Steps
Bondo is a versatile, durable product commonly used for automotive and home repairs. It is a polyester resin-based filler that is perfect for filling dents, scratches, and imperfections in surfaces. In this article, we will explore the 8 essential steps to properly apply Bondo.
Step 1: Gather Materials
Before you begin, gather all the materials you’ll need for Bondo application. These items include:
– Bondo Body Filler
– Sandpaper (80-grit and 180-grit)
– Sanding block
– Putty knife or spreader
– Mixing board
– Disposable gloves
– Dust mask and safety goggles
Step 2: Clean the Surface
Ensure the surface is clean and free of dirt, grease, and debris. Use soap and water or a mild solvent to clean the area you’ll be applying Bondo to. Let it dry completely before moving on to the next step.
Step 3: Sand the Area
Before applying Bondo, sand the area using 80-grit sandpaper. This will help create a rough surface for better adhesion of the Bondo filler.
Step 4: Mix Bondo and Hardener
Follow the manufacturer’s instructions for mixing ratios between Bondo filler and hardener. In general, it will be around a golf ball-sized amount of filler to a pea-sized amount of hardener. Mix them together on your mixing board with a putty knife until they are fully blended.
Step 5: Apply the Mixture
Working quickly, as Bondo can harden quite fast, apply the mixture to the surface using a putty knife or spreader. Spread it in thin layers, gradually building up until it slightly overlaps the surrounding unaffected area.
Step 6: Allow to Harden
Leave the applied Bondo mixture to harden according to the manufacturer’s instructions. It usually takes about 20-30 minutes, depending on the temperature and humidity.
Step 7: Sand and Shape the Bondo
Once the Bondo has hardened, sand it down using 80-grit sandpaper on a sanding block. Be sure to shape it evenly, gradually working towards the final desired appearance. Use your hands to feel the surface to make sure it is even and smooth.
Step 8: Final Sanding
After shaping the Bondo, switch to a finer 180-grit sandpaper for a final sanding pass. This will smooth out any small imperfections left behind by the previous sanding steps. Wipe the surface clean with a tack cloth to remove any dust.
Bondo is an excellent product for repairing small damages and imperfections in various surfaces. By following these 8 steps, you can achieve professional-looking results easily and efficiently. Remember to always wear proper safety gear when working with Bondo and enjoy restoring surfaces back to their former glory!