I have never needed an edge before. The wife and I purchase a new home and I noticed another lawn down the street whose driveway and walkway was edged. I liked it. I have own this home for 11 months and in the south you cut your grass on Christmas.  I noticed the grass was really creeping on to my concrete and looked horrible. I tried cutting is back with the trimmer no luck. This lays the ground work. my concrete edges have not been touched in years. I purchased this and went to work really digging in a edging my whole property and the edger was powerful enough to chop thru the grass and dirt. ( no rocks) and made my property  look well maintained. Now once done should be no issues keep up the beauty. ********NEW UPDATE.... MOTOR HAS LOST LOTS OF POWER AND MAKES  NOISE AND SMELLS.... CONTACTING BLACK AND DECKER DUE TO OUT OF 30 DAYS.  OH BOY THIS SHOULD BE FUN.