I really do enjoy using my card scraper but sharping them can be a pain. I have been using them for maybe a year now and I still have trouble getting a nice burr on them. When I do get a nice burr they are so nice to use. A card scraper can save you time and money plus give you a better surface. Here is a good video (IMO) on card scrapers showing how to sharpen them and how to use them. If you have any good ideas on card scrapers please post them so we all can learn more about them.