Ok - I thought this was going to be a little bit easier to accomplish. The Mejiro was a bear to cut... took forever. Botan was a lot easier - Tenjou was in the middle of the two, not easy but not quite as difficult as Mejiro. The Koma - that was tough because I was trying to be uber-careful to limit the waste. There was so much powder from the cutting it was crushing to throw it away. I contemplated trying to save it and figure out how to grind it down but I figured that was more trouble than it was worth.
I am going to consider cutting the Ozuku Tomo Nagura, and the Botan in half. I don't need either to be that large, and it will make the set a little tighter and lighter. The Botan will cut easily enough beacuse it's thin. That Ozuku though - I don't know if I can cut it with a hacksaw so easily.