Mezzaluna/pizza cutter

[Philip Davies]

I knew of 'mezzaluna' ('half moons' in Italian) as a pasta variety, kind of ravioli, being stuffed. A knife too? Who knew?

Mark of a craftsman. When at first it falls short, reinvent! How many common tools aren't like what they started out as?
Meanwhile, having a small turret lathe, is there a niche for saw rivets?

Thank you kindly. But how many craftsmen want extra rivets for their handsaws? It appears that manufacturing them would require up to a dozen machining processes. The male half has a ribbed shank, the female is a slot screw.