I have a peice of thick rubber mounted between the blade and the replaceable cutting edge. I found that this works pretty well for clearing snow off a concrete driveway without scraping the driveway too badly. It also makes the transistions from pad to pad much smoother. Plus, it is a lot quieter than dragging a steel blade across the driveway. I don't think I have any pictures that I can easily post, but I am sure somebody has some photos. I got the idea here.