In our case, steel. And let's face it, these bikes are old... that's part of their charm. But with that age comes rust. Yes... the dreaded "R" word. What's the best way to deal with rust? I have my methods and opinions. But then, you know what they say... the three most abundant elements in the Universe are hydrogen, opinions and stupidity. When it comes to rust removal I want "just the facts ma'am". Well, here ya go. A well made video with quantitative results of various methods of rust removal from a gent from New Zealand. Enjoy. Pssst.... vinegar is snake oil.