In general, it is legal to make a sword in many places around the world, provided you have the appropriate tools, skills, and safety measures in place. However, laws can vary significantly depending on your location, and there may be specific regulations about the types of weapons you can manufacture, as well as rules about their possession, sale, and transportation.

• In the United States, there are generally no federal laws prohibiting the manufacture of swords. However, state and local laws can vary, so you should check the specific regulations in your area.
• In the United Kingdom, it's generally legal to make a sword. However, the manufacture of certain types of swords, such as those with a curved blade over 50cm in length, could potentially fall under the Criminal Justice Act 1988 (Offensive Weapons) (Amendment) Order 2008, unless they meet certain criteria.
• In Australia, it's generally legal to make a sword, but laws can vary between states, so it's important to check local regulations.

Remember, even if it is legal to make a sword, you must also consider the legalities of owning, selling, or carrying that sword. Additionally, making a sword requires skill and proper safety precautions, as it involves working with potentially dangerous tools and materials.