This morning I picked up this 18mm oirenomi made by a retired blacksmith who is now 78 years old. He still does some small scale work now and again but only when he feels like it. This blacksmith who made it specialises in shirogami #1 and always worked for wholesalers. He's an old school blacksmith and that means the hagane is full hardness. Even though it's full hardness it's tough as nails. This thing can take a serious pounding without the edge chipping. The biggest surprise though is how it sharpens. This shirogami #1 feels very different from any other Japanese chisel I've ever sharpened. The only thing I can compare it to is a Kiyotada I own, they are very similar. The way my tool suita bites into the steel is extremely satisfying. The jigane is also very different. It feels like it's much softer than it actually is and it's a great slurry maker. Out of all the Japanese chisels I own and have owned this is the only one that can match Kiyotada and that's a pretty big feat considering Kouzaburou Shimamura is regarded as one of the best blacksmiths in the history of Japan. Outstanding lamination. Very thin and clean. No sign of the hagane melting into the jigane.