Rust for art--how to & suggestions? Hi, I noticed the topic on making rust from steel wool with vinegar and bleach. Can anyone suggest how to form iron rust quickly, but without the chlorine production? I am using large steel sheets and trying to produce art-worthy patterns without waiting weeks for the result. My thoughts so far: 1) wet with a strong acid 2) remove from acid 3) let rust in humid environment (for wetness and proximity to oxygen) 4) neutralise with sodium bicarb Alternatively 1) immerse in strong acid 2) oxygenate acid with bubblers (health hazzard would be vaporised acid) 3) remove and neutralise with sodium bicarb Sorry if these suggestions show rusty Chem knowledge, it's been a while!