Are copper scours the same as steel wool? I tried following advice from this sub using vinegar and a copper scour to remove rust from my pan, but it still looks rusty?

How to remove rust from cast iron pans and do you properly wash them after cooking - Quora

Scrub Daddy's Guide - How to Clean Up Copper, Blog, Scrub Daddy

How to Clean and Care Carbon Steel Pan

What is steel used for—and can it clean your mess? - Reviewed

Antique Firearms Restoration Blog – … and C19 gun engraving

Ruined? Tried cleaning with copper scrubber, looks like steel underneath is it even real? : r/castiron

Rust on Your Cast Iron? Not A Problem!

How to Clean Cast Iron Skillet

Wok rusting? : r/culinary

How to Clean Stainless Steel Cookware

How to Strip and Reseason a Carbon Steel Pan IF You Need To