I've done a few already and infi doesn't rust. I have had it get tiny dark spots. Not sure what to call it, but reeeeeally tiny dark spots and useually in spots that don get touched, lIke right next to the scaless at the pommel or ricasso. After the initial blasting, I oil it once and that's the last time it sees anything but soap, water and a rag. Maybe oiling would stop it. I don't know. They are such tiny spots that they are hard to find so I don't worry about it. I've never blasted SR101 because I think it would increase the potential for rust BUT I do think that if a guy blasted it to totally clean the surface and then followed with a quick polish, it would probably work pretty well. The stuff I'm blasting with leaves the surface pretty darn smooth so it doesn't take much effort at all to go from a frosted look to shiney.