After eating my Khorne Flakes, from a sudden idea and playing too much Minecraft, I wanted to make a monomolecular obsidian edged weapon (not just throwing knives and arrowheads).
- I have nanotech and patience at my disposal.
- I don't mind if my weapon is "living".
- I just want it to have a nice little obsidian edge, that can be quickly replaced, repaired or just make it cut through a material that is made soft enough, to not shatter the edge.
What's the most convenient way of achieving this, and I don't want to carry dozens of swords to the battlefield as "replacements".