One more comment that's worth mentioning. A lot of times when I've had an issue with rust, the real issue is neglect.

If you neglect your blades and their sheaths and don't care for them properly, then eventually rust may develop somewhere along the way.

So I guess you could say that Rust and Neglect are very good buddies... <img src="/ubbthreads/images/graemlins/grin.gif" alt="" />