How To Intentionally Rust Metal The Quick And Easy Way
This tutorial will show you a fast, safe method, using common household chemicals that you probably already have, to produce a rich rust patina on iron and steel to give it a weathered, aged appearance.
I am so doing this. So easy and surprising how rust gives something like an old windchime, for example character and age. I searched the net and found mostly dangerous methods to induce rust on steel using highly caustic or acidic chemical solutions. However I finally did find a simple safe method, using on-hand household chemicals, buried deep within a thread on the subject at a metalworking forum.