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Using hot and cold water to achieve a sudden change in temperature, the metal contracts and a dent in the car can be fixed. It works on both sheet metal and plastic, for example on a bumper. ► Links: Portable kitchen http://amzn.to/2ledoR4 Best cheap suction cup: http://s.click.aliexpress.com/e/bRyxJSYo Recommended ladle: http://s.click.aliexpress.com/e/bX3Il0M0 Sometimes it takes several attempts but it usually works even with large dents. This process does not damage the paint or the car, so you have nothing to lose by trying and you can save many euros on bodywork and paint.