The last step that Joseph took was to add some primer. This allowed him to see any imperfections. Looking over the bike very carefully under a magnifying glass, Joseph noticed some minor details that had to be fixed. He then poured a little more filler out onto the mixing tray and quickly fixed the flaws in a matter of minutes. This Bondo Basics class was now over, and our homework for the day was to go home and try this on a spare bike frame.