Car Plastic Bumper Repair: Body Filler

What is Body Filler?

Body filler, also known as filler primer or glazing putty, is a type of automotive repair material used to fill in and smooth out imperfections and damage on car surfaces, such as plastic bumpers. It is typically made from a combination of resin, hardener, and various fillers, and is applied in a paste-like form.

Types of Body Filler

There are two main types of body filler used for plastic bumper repair:

• Polyester body filler: This type of body filler is strong and durable, and is ideal for filling in larger holes and cracks. It is also relatively easy to sand and shape.
• Epoxy body filler: This type of body filler is more flexible than polyester body filler, and is better suited for filling in smaller holes and cracks. It is also more resistant to heat and chemicals.

How to Repair a Plastic Bumper with Body Filler

Repairing a plastic bumper with body filler is a relatively simple process that can be completed in a few hours. Here are the steps involved:

1. Prepare the Bumper

* Clean the bumper thoroughly with soap and water to remove any dirt or debris.
* Dry the bumper completely with a clean cloth.
* Sand the area around the damage with a medium-grit sandpaper to create a rough surface that the body filler will adhere to.
* Remove any loose pieces of plastic or debris from the damage.

2. Mix the Body Filler

* Wear gloves and a respirator when mixing body filler.
* Add the hardener to the resin according to the manufacturer’s instructions.
* Stir the mixture thoroughly until it is a smooth paste.

3. Apply the Body Filler

* Apply the body filler to the damage using a putty knife or spreader.
* Spread the body filler evenly and smoothly over the area.
* Use a wet sponge to smooth out the body filler and remove any air bubbles.

4. Allow the Body Filler to Cure

* Allow the body filler to cure according to the manufacturer’s instructions.
* This can take anywhere from 30 minutes to several hours, depending on the type of body filler used.

5. Sand and Shape the Body Filler

* Once the body filler has cured, sand it smooth using a fine-grit sandpaper.
* Start with a coarse sandpaper and gradually move to a finer sandpaper until the body filler is flush with the surrounding bumper surface.
* Use a sanding block to achieve a smooth, even finish.

6. Prime and Paint the Bumper

* Apply a primer to the repaired area to protect it from moisture and corrosion.
* Allow the primer to dry completely.
* Paint the bumper with the desired color of paint.
* Allow the paint to dry completely.

Tips for Using Body Filler on Plastic Bumpers

* Always wear gloves and a respirator when using body filler.
* Mix the body filler according to the manufacturer’s instructions.
* Apply the body filler in thin layers to avoid cracking or peeling.
* Allow the body filler to cure completely before sanding.
* Use a fine-grit sandpaper to sand the body filler to avoid scratches.
* Prime the repaired area before painting to protect it from moisture and corrosion.

Conclusion

Body filler is a versatile and effective material for repairing plastic bumpers. By following the steps outlined above, you can repair your plastic bumper and restore it to its original condition.