Just wondering if u could bondo over primer? I heard some stuff u can.

Like if i sanded down to the metal, then primed to seal it up. Then started to block it, then saw a real low spot.Or would i need to take it down to metal again?

 

You could just have to 80 grit the area where you're putting the filler so it'll adhere to it.

 

So i can just 80grit the OEM/Spary primer then bondo it?

 

You could probably get away with it but most body filler is made to go on bare metal.

You can put polyester filler over paint though. You can also mix body filler and polyester together with your hardener and use that on top of paint or primer. Stay with the same brand though. Dont use no name body filler and mix it with evercoat polyester etc..

 

i know evercoat's zgrip premium filler can go over primer/paint for sure

 

The 80 grit breaks to the bare metal.