Purchased a Case Cutlery slippie in Chrome Vanium for a gift and the owner has noted sudden and profound rusting of the blade. He claims to have kept it reasonably clean and dry with a light wiping of canola oil as a food safe rust inhibitor. Knife is not unusable but it has started to lightly pit. At this time we are going to clean it up with extra fine steelwool and light oil but does anybody thing this could/should be addressed by Case?
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Case CV blade rusts badly
- Thread starter Buck268
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CV is a non-stainless steel, so it's generally expected that some regular preventive maintenance should be done to keep the rust at bay. Food-based oils may not be the best for that, as they can break down and become acidic (can contribute to rusting), or at least lend a false sense of security. Depending on other issues, like how the knife has been used and it's exposure to things like sweat, acids or saltwater, there could be other contributors to rusting.
Light rusting can be polished off with some metal polish like Flitz or Simichrome. Don't worry about the pitting so much right now (it'll take sanding to remove it); just make sure to clean/polish the red rust away, and then keep the blade clean after use. Mineral oil is an easy substitute for food-based oils, and won't become acidic like they can. In the near-term, that's what I'd likely be using.
David
Light rusting can be polished off with some metal polish like Flitz or Simichrome. Don't worry about the pitting so much right now (it'll take sanding to remove it); just make sure to clean/polish the red rust away, and then keep the blade clean after use. Mineral oil is an easy substitute for food-based oils, and won't become acidic like they can. In the near-term, that's what I'd likely be using.
David
- Joined
- Apr 19, 2012
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- 8,099
Depending on where you live, a light coating of oil is needed on a cv blade. If you look at this test, you will see that some oils work well and some are basically worthless!!
http://www.bladeforums.com/forums/s...-a-not-so-little-rust-prevention-test-round-2
http://www.bladeforums.com/forums/s...-a-not-so-little-rust-prevention-test-round-2
Don't put anything on the blade. Just keep it clean and dry, and it wi b e fine, unless your friend is not telling you something that he's not doing. Like cutting something damp and not wiping it off. With a carbon steel knife just wipe it down in the boring, and at night with a clean dry cloth, and it will be fine. There will eventually be some darkening of the steel as a patina forms from moisture in the air, and whatever it comes in contact with cutting. That's normal. In day to day use, a carbon blade is going to patina, no getting around that. I carry a carbon steel pocket knife here in Maryland, with a salt water atmosphere. So far this summer my knife has been in both the Cheasapwake bay and the atlantic ocean. No rust, but a gray patina has formed.
If your friend carries a bandana, just tell him to wipe it done during the course of the day.
If your friend carries a bandana, just tell him to wipe it done during the course of the day.
Could force a patina on it to help protect it. And I hear chapstick works good to protect the blade and is quite handy to carry, a quick search on here will provide you with some people who swear by it though I haven't tried it. And if they carry it in their pocket use a knife slip pouch (forgot the actual name of it, but think a sheath but without belt attachment) to keep that sweat away from it.