So I did a terrible job trying to match the paint on the doors (the doors had the old paint peeling off) with the rest of the car and I would like to repaint the entire car to have the same color. Wet sanding would be an extra lengthy dirty process so I was wondering if I can just apply new primer over the old paint which has already some layers of clear coat. Will the primer stick to the clear coat or will it peel off after a while?
I mean, in theory it makes sense to sand it as it increases the contact surface through its roughness, but I’m not sure that I understood correctly if the primer works like that or it just sticks on the surface it is applied on through some chemical bonding or whatnot. Can anyone help me with this? Thank you!