In the December issue of Landscape Management there is an article entitled Trends from 2016 GIE+EXPO. In that article they discussed the increased use of battery powered equipment, tweets, etc. Seems there is a company, Fischer Barton, which is marketing a mower blade which "sharpens itself." The company claims they never need sharpening. The website has pictures of the blades. These blades are being sold through dealers and are available for most brands. Have any of you heard of or used them? I may see if my dealer can get them and try a set or two. Not sharpening blades would be great.