I'm very intrigued by this so called magnetic primer. Haven't used it nor heard of that type of primer before. Could it (maybe) make modding and assembly easier...-insert thinking emoticon here-
EDIT: also my main concern is being careful not to get it on other objects such as fingertips (remember, kids. Always wear gloves and a mask when working with sprays such as primers and sealers; this part, within the parenthesis, is meant to be a joke, we all know what to do though)