I didn't know one was supposed to prime before laying filler! (thank you for enlightening before I made things worse!
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Careful how loudly you shout that statement! That's an ongoing debate which seems to have just as many pro priming before filler / as there are pro filler before primer. You'll find MANY threads on that topic here.
Indeed! One thing to always remember is that while body plastic can bond to primer, or any topcoat for that fact, anything between the plastic and the base metal has the potential to fail. The plastic can be bonded like an X wanting her alimony check to the primer but if the primer bond fails the plastic is all coming off with the primer. In case you couldn't tell I'm firmly in the prime AFTER plastic is applied camp. Been there, done that.
