I have several ICE scrapers they are all probably 20 years or older. All of them when I scrape ice off the windshield its kind of sketchy. I took a piece of glass a piece of Emory paper some duct tape or duck tape as so many people call it and safety glasses / gloves.. You need an 8x10 or so of the glass and Emory paper. Tape the Emory paper to the glass. Notice the angle that the scraper has on the blade. if you have chips out of the blade, hold the scraper at a 90° angle to the Emory and grand away back and forth long ways. Then finish up maintaining the angle originally on the blade. It won't be like new , it will be much better than it was.