It’s Dan, back with another Pro Tip Tuesday from Carbon Method!
Let’s talk about removing rust and stains from your cast iron tools!
There are two main ways to tackle corrosion: chemically or mechanically. Chemical rust removers – like converters – work by transforming red iron oxide (rust) into black iron oxide. Now, that DOES stop active corrosion, but here's the tradeoff: black iron oxide is a pigment – used in inks, rubbers, plastics, paints, even cosmetics – so when it forms on cast iron, it can leave a deep, dark, embedded stain that's really tough to remove.
That’s why I prefer a MECHANICAL approach, especially if you are prepping for a Carbon Coat application. The best method is to use a non-woven abrasive pad, some lubrication, and a random orbital sander.
A lot of folks reach for WD-40, but it’s thin, sprays everywhere, and you’re blasting propellant into your shop. That’s why we designed Carbon Method Reconditioning Oil. It’s thicker, so it stays under the pad. It’s in a pump bottle – no propellants. And it’s formulated to chemically soften both red and black iron oxides, making your sanding far more effective.
So you get a hybrid approach: mechanical removal, with a chemical advantage. Carbon Method Reconditioning Oil will remove deeper stains faster than the other stuff leaving you a perfectly prepped surface for an easy, long-lasting, Carbon Coat application. Our Carbon Coating Prep Kit has everything you need, including Reconditioning Oil and abrasive pads!
Don’t let stains put up a fight, use Reconditioning Oil to do it right!