Auto body repair & detailing: body filling, rust patches, 3m adhesive

Question
dont know if you can answer this but i just wondered if filling my front grill in would effect my car in any way if so do you know of a way to counteract this? also i need to know how to fill large holes in the bodywork. thankyou...

Answer
If you fill in your grille all the way then your car could over heat. You could counteract that by putting in a electric fan or not closing it in all the way. I would put mesh plastic in there they sell kits that you can custom fit for your grille. As far as big holes in your body work if you mean in the metal before you bondo then you could rivet some metal first or weld it or they have adhesive for rust patches by 3M. I would use 3M adhesive. And if you mean pin holes in the bondo then you use spot putty.
              Thank you for the question!
              Ken