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Mystery Kamisory (NOS)
Mizukihara Tenjyo Suita
Hideriyama Suita tomo nagura

This is a virgin NOS mystery kamisori that was given to me by a friend. It had a light coating of surface rust that was easily removed with mineral oil and fine red scotchbrite. The geometry was pretty wonky but the omote was very flat and well ground. My first attempt at setting the bevel was with Botan but it just wasn't cutting fast enough so I switched to a new and unproven little Hideriyama suita tomo nagura. It is soft and grainy. Kicked up some serious mud with little effort and cut twice as fast as the Botan. The omote came in nicely but the ura required some creativity due to uneven voids in the soft iron steel. Took about an hour to set the bevel then on to botan. The kanji on that tomo was wiped out almost immediately.