I shaved a little while ago with a treet carbon blue blade in a 1912 old type, no cuts, nicks or weepers. I also had the same result yesterday with the same setup, imo it does work and I got two good shavesI've never used carbon steel razor blades, but I'm aware that the vintage Gillette Blue Blades were carbon steel. How do modern carbon steel blades compare? Would modern carbon steel blades be good in a vintage Gillette razor? Are there any differences in sharpness, smoothness, thickness in modern carbon steel vs stainless steel blades?