Squeeze the hardener onto the bondo and use your putty knife to work and mix the hardener throughout the bondo. This should only take a minute or two. Scrape your blade clean on the side of the tray now and then. read more
Use a sanding block or random orbital sander with a 80 grit abrasive sheet to remove all paint to approximately 2" around the dent. Step 4. Using proper techniques mix Bondo® Body Filler using the Bondo® Plastic Spreader from 3M and apply mixed filler to the dent. read more