Few people know this simple technique to sharpen a knife to a razor's edge

There is a simple and little-known method to sharpen a knife to a razor's edge using a plastic bottle cap. This method is easy to apply and utilizes materials available in every household, allowing anyone to perform it without the need for special equipment or additional cost. The technique involves using a plastic bottle cap as a sharpening tool for the knife's edge, providing it with a sharpness similar to that of a razor. This method can be very useful in emergency situations or during trips when a sharpening stone or file is not available.