Originally Posted by dingla rs

if your just priming the bumper you normly mask off the arear that you dont want paint on or primer like this altho its just a guid to show you what i mean





so thats first set flat arear down thats flaking with 800 till there is no edge ,mask the arear off so no primer gets on wing ect ,plastic prime ,dosnt need sanding at all then primer witch will need flatting ,flat the old paint to the nearest edge or line remask and put the topcoat on