obviously rust is bad, wrapped it in a dry towel, leaving it out of duty for now, waiting on oil, then probably going to take 5,000 grit stone to the side of the blade, try to get the rust spots off.
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If left out after use for hours without immediate cleaning, I doubt any steel bladed knife will resist starting to rust (i.e., developing Fe2O3 - sorry if I don't have subscript). Once started, then rust development will continue until it is removed. Fe2O3 does not form a patina (unlike Fe3O4) and will just merrily allow for further oxidation behind the initial surface. And it's a cascading effect - it starts out tiny, but grows exponentially.
And it's accurate to call stainless knives "stainless" rather than "stainfree", since they will literally "stain less". That does not mean they won't rust, if given a chance.
Most "stainless" knives have a high chromium content and atmospheric oxygen will quickly bond to the surface chromium - especially if the surface is clean and dry. That chromium oxide forms a shiny silverish patina which is resistant to oxygen going below the surface.
That's a major reason why knives should be cleaned IMMEDIATELY after use, dried and then put away clean and dry.
As for the steel in MAC knives - MAC generally only uses one proprietary steel, which I seem to recall BDL supposed was akin to VG-1. The differences between the "Superior" series, "Ultimate" series and the MTH-80 (8 inch)"dimpled" (i.e., with Kullens) Mac Pro is that they use what MAC refers to as "Superior" steel processing. It's a different hardening process (probably in the Quenching and Tempering stages) and the blades are noticeably thicker than other similar, non-"Superior" MAC's.
alright, that was enough of a kick in the pants to take my 5,000 grit stone out and polish out the rust. My birthday is wed, and a friend said he's going to get him a higher grit stone. So i was going to wait until i got it, and until i got oil thurs. but if rust is growing exponentially...
Lately I've been using trizact automotive sandpaper 3k-5k grit for the same purpose
One more thing. I just noticed today that the picture of the MBK 110 on Mac's official site has 2 rivets on the handle and the knife i received has 3 rivets. Also, the material of the handle looks a little different, might just be the lighting i guess. Could this be a fake?
Edited by Atatax - 2/25/15 at 9:32am