On my inner fenders I found my finger prints in rust two days after I brought then home from the blaster. They looked clean and bright when I picked them up. Another two days passed before I
got time to get back to them and they had more rust popping up. Used a flap disc on my grinder
to clean them off the rust then used Jasco Prep & primer on them. been a couple of weeks now and
they still apear rust free.