Training swords, such as wooden swords or polypropylene swords, are not typically designed to be sharpened. These swords are primarily intended for training, practice, and sparring, and they do not possess the necessary construction or materials to hold a sharp edge effectively.

Wooden swords are made from solid hardwood, which lacks the hardness and durability required for effective sharpening. Attempting to sharpen a wooden sword can result in damage to the blade, splintering, or compromising its structural integrity.

Polypropylene swords, on the other hand, are typically made from a durable synthetic material that does not have the capacity to be sharpened like metal blades. The material does not lend itself well to holding a sharp edge.

If you are looking for a sword with a sharp edge, it is recommended to consider a functional sword made from appropriate steel that is designed and constructed to hold a sharp edge. Functional swords are created by skilled bladesmiths using specialized techniques and materials to ensure their effectiveness and safety.