Do you need to use Bondo to remove rust?

Eventually, it will require rust repair to remove the rust. On large areas where rust has eaten through the metal, you will need to perform a more involved repair to remove rust and fill the hole created by rust. Here are the steps required to use Bondo, a repair putty, for rust repair.

What kind of putty do you use to repair rust?

Here are the steps required to use Bondo, a repair putty, for rust repair. Some places on your vehicle's surface that are rusted completely through the surface will be easy to spot. Other areas may be deteriorated enough that the vehicle's metal surface is rotted but still has not created a hole, or opening in the surface.

Can you use epoxy to smooth out Bondo?

Allow the resin to harden. There is no need to apply the fiberglass or epoxy to surface areas that are pitted but have not rotted completely through the metal. When your epoxy has hardened, use your grinder, or sander, to smooth off any rough spots on the surface you'll be applying Bondo to.

How do you use Bondo to repair fiberglass?

On your mixing pallet, mix the Bondo and hardener. Using your putty knife and spreader, apply Bondo to the surface that has been created by your fiberglass and epoxy. When finished you should have a relatively even surface with all surface holes and pits filled. Allow the Bondo to harden. Use your rasp and sanding block to smooth your new surface.