Originally Posted by Jim Bow
Do you prime bare metal before using any bondo?
The rougher the metal the better. It gives the plastic more "tooth". You can put plastic over primer or paint but keep in mind that while it will probably stick to the primer or paint, IF the primer or paint looses adhesion and peals your plastic will peal right along with it. That's why it's recommended putting in over bare metal.


Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.