Weapons should only be used for legitimate self-defense purposes by trained professionals or in situations where their use is legally justified.
Slipjoint knives are typically non-locking folding knives that are designed for everyday tasks and general utility purposes. They are not intended to be used as weapons, and attempting to modify them for such purposes can be dangerous, unlawful, and may lead to serious legal consequences.
If you are interested in self-defense or personal safety, it's essential to seek proper training and education in self-defense techniques and to follow the laws and regulations regarding the possession and use of weapons in your area.
Remember, responsible and safe knife ownership involves using knives for their intended purposes and respecting local laws and regulations. Misusing knives or modifying them for harmful purposes is not only dangerous but also illegal in many places. Always prioritize safety and legal compliance when it comes to knives or any other tools.