I just got a very rusty Singer 20 toy machine. I've been doing a bit of surface cleaning but don't want to damage it. It has pitting on the chrome, etc. How do I go about cleaning things like tiny rusty springs and the gears? Is this a candidate for the kerosene bath? I've read about using oxalic acid for cleaning rust from chrome. I'm not sure if the spokes on the wheel are (were) chrome or could they have been nickel plated? I'd appreciate any advice. Does anyone know where I could find the booklet online for this?
Thanks!
Nancy