How to polish the lock
How to polish the lock will determine the speed at which the lock will rust again. Basically, rust will re-rust in the same area. That's why it's a good idea to use things like car wax to seal all small defects in metals that are susceptible to future rust. Of course, you should take the time to dry the locking assembly before any polishing. Then, once the polish is completely coated with the lock, be sure to remove excess polish so that it does not cause the latch to stick.