1 In Batman Cacophony Joker (temporarily sane) tells Batman he wants to kill him. 2  He explains that if he kills Batman he will surrender to the police and give up crime. 3  Batman later tells Alfred The clown won't stop until one of us is dead. 4  Joker states to Batman I don't hate you because I'm crazy.
There are many types of diamond blade, and they have many uses, including cutting stone, concrete, asphalt, bricks, coal balls, glass, and ceramics in the construction industry; cutting semiconductor materials in the IT industry; and cutting gemstones, including diamonds, in the gem industry.
Make the mower blade the same way as those handy self-sharpening knives. The more grass, dirt, rocks and cats you mow over the sharper the blade gets. Self sharpening blades are typically made by applying a coating or heat treatment to only one side of a blade making that side extremely hard and brittle so that chips and wear to the edge result in a new edge, just as sharp. But such a treatment for mower blades might make them overall too brittle to be practical.