ThriftyFun is one of the longest running frugal living communities on the Internet. These are archives of older discussions.
Here's a sharp idea: remove rust from household tools by using Morton's Salt and 1 tablespoon lemon juice.
Removing Rust from Metal?
Removing Rust from Saw Blades
Preventing Rust on Baking Pans
Removing Rust Stains on Guns?
Removing Rust from a Car or Truck
How to Fix Sterling Silver Tarnished by Bleach?
Removing Rust from Metal Cake Decorating Tips?
