Cast Iron Rust Removal: Smart, Safe Fix for a Toy Elephant

Summary for cast iron rust removal Discussion

Removing rust from cast iron toy elephant is the central question here: Laura Cammack asked how to clean a cast iron toy elephant dug up in a backyard, covered in thick rust. Goran Budija recommended a 5% ammonium citrate solution, explaining it can be made from 50 g citric acid per liter of water with added ammonia, and noting the pH should be about 3.5. He also said a very strong tea solution may work, and that a plain citric acid-and-water solution can be used as well. Budija emphasized that after rust removal, the piece must be protected with wax or lacquer to help prevent future corrosion. The thread is brief and offers one practical treatment approach rather than multiple conflicting methods.