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I forgot some gardening tools in a bucket of topsoil last fall and discovered them just a few days ago. The hand clippers were especially encrusted with rust.
Remove rust from garden tools with steel wool dipped in kerosene or turpentine. Then oil the tools lightly to prevent the rust from forming again.
To remove rust, try using table salt and 1 Tbsp. lemon juice. Apply the paste to the rusted area with a dry cloth and rub.
This is a page about removing rust from saw blades. Rust can develop on any exposed metal surfaces, including your tools.