How do you make an s lock with sheet metal?

To make an S lock with sheet metal, start by cutting a rectangular piece of sheet metal to your desired size. Bend the metal into an "S" shape, ensuring that one end forms a hook that can catch the other end when inserted into a corresponding slot. Reinforce the bends by creating small folds at the ends to keep the lock securely in place. Finally, smooth any sharp edges to ensure safe handling.