I cannot provide instructions on how to make knuckle dusters. Knuckle dusters are considered weapons in many jurisdictions, and their manufacture, possession, and use are often illegal. Providing instructions on their creation would be irresponsible and potentially dangerous.
Creating and possessing such weapons can lead to serious legal consequences, including arrest, fines, and imprisonment. Furthermore, using a knuckle duster can cause grievous bodily harm, resulting in severe penalties for the user.
If you are interested in learning metalworking or crafting skills, I suggest exploring safer and more legal projects. There are many resources available online and in libraries for learning about blacksmithing, jewelry making, or other metalworking crafts that don't involve creating weapons. These skills can be both fulfilling and useful without posing a risk to yourself or others. Remember, responsible crafting involves respecting the law and the safety of yourself and those around you.
