So, what the title says. I haven't been taking care of my swords. Now my Gim has a several inch patch on each side .that is starting to rust up. My other swords are showing small signs they are starting to rust up too. I am deeply ashamed and want to mend my ways. People at my school have a ton of opinions on how to remove rust. I have even had a guy tell me to use cool-aid. Said he learned that in the military. I have heard one should sandpaper out the rust. But others say that damages the sword. If it is ok, what grade sandpaper should I use? Should I see if some sword shop does repairs or would that cost as much as buying a new one? Or do you all have different suggestions? Once I get the rust removed. (If I can do so.) I bought "Hanwei" sword oil years ago. Should that be used. Or just WD 40? Something else? How much should I use? Can using too much oil cause damage? Any thoughts on sword repair and care would be most appreciated! It isn't particularly close, but my next TCC test is in front of our Grandmaster. My instructor said he hates seeing swords in poor condition. I have contemplated buying a new Gim, but I really like the feel of my current one. I hope I can save it.