James Falor said:
Does anyone out there have a favorite way to protect carbon-steel blades from rusting? My non-using knives are in a gun-safe and I have lots of those mil-spec dessicant packets in there but I recently discovered teeny, tiny little specks of rust (although it's not rust-colored) on an Ed Fowler blade.
Some years ago, there was a post on rec.knifes (not the website, but the Usenet News group) about a fellow who went on extended travel for a year or so. He packed up all his stuff into one of those storage locker things. And he packed his valuable knife collections (some original Randals, Loveless, that sort of thing) into a military surplus ammo can and added some dessicant packs. When he got home and opened that sealed ammo can he found his whole collection hopelessly ruined by rust. The conclusion of the experts gathered there is that the culprit was the dessicant packs.
They are not magic. They don't make water go way. They're sort of like a sponge. They absorb water and hold it. But, under the right conditions, they can re-release it especially if they've become saturated.
Most safes derrive their fire resistance from gypsum. The walls are lined with gypsum. Gypsum absorbs water and holds it and then, when temperatures rise high, it releases that water which cools the area around it. This is one reason why the inside of the safe can stay a thousand degrees below the surroundings for several hours. But, when you put dessicants inside your safe, they can pull water out of the walls of the safe reducing its fire resistance.
For knives that are being stored long-term, the best solution by far is Ren Wax.
By the way, that speck on your Fowler will come off harmlessly with a dab of a non-abrasive polish such as Flitz. Put it on, rub with a soft cloth or your finger to get the polish into the surface texture of the metal, let it sit for a minute or two to dissolve the oxide, and then buff it off with a soft cloth.