This thing is a necessity for anyone who wants to take care of their gear. Scraping wax with a dull scraper takes a lot of unnecessary effort. A couple swipes with the toko sharpener and your scraper is like new. Eventually, the scraper causes a slight concave edge on the scraper, however, it doesn't affect the ability to scrape wax off the ski (obviously). Do yourself a favor, and buy one of these now.