How to clean rusty tools
Apply an abrasive chemical to loosen the rust
As you will be using an abrasive chemical cleaner, make sure you wear protective gloves. If you're not working in a well-ventilated area also put on a face mask. Give the tool a gentle squirt with the abrasive chemical. You don't need to leave it on for very long.
Rub over with steel wool
Apply a protective lubricant
Use a wire brush on heavily rusted tools