Fill the container with enough vinegar to cover the item.
Step2
Place item in the vinegar.
Step3
Let the item(s) soak as long as needed. This may be as long as several days. When finished the item may have a black gunky coating.
Step4
Rust gone!
Rinse the item with clear water and brush off any remaining rust or coating. Treat the item with oil, or otherwise protect it from rusting again.
Tips & Warnings
This technique would most likely be more effective with smaller items that are not heavily rusted.