Hi guys I've added a quick picture on kitchen cupards I'm spraying. I think it's melamine on the mdf as it has a orange peel type surface ( pic of unprepped surface). Tried to sand it with 240 and used primer but still get the orange peel effect showing through the primer (2 coats). Curious as to what needs to be done to erase this issue do you think more sanding or more primer different sanding grit etc. Any help would be great as after a flat finish.