Attach the Rotary Sharpener
    to any electric drill with a chuck of 6.5mm or more, simply disable your lawn mower, turn
    it on its side and secure the blade, then run the specially angled grinder along both
    edges to create an 'as new' cutting edge.
    The Rotary Sharpener can also be used to sharpen many other garden implements,
    i.e. spades, hoes, axes, shears, lawn edges etc.