Joseph nodded slightly as he listened to Philippe's explanation.
It's just like the difference between using a kitchen knife and a utility knife to cut paper. With the former, no matter how careful you are, the cut will always end up with burrs, while the latter can easily deliver a smooth edge.
He immediately turned to Jacques Renou: "What is that hard material you discovered? Oh, and do you also own a laboratory?"
The latter waved his hands repeatedly: "No, no, Your Highness, I'm just a technician at the Namu Royal Iron Refinery, working in Mr. Wandell's laboratory.
"During an alloy steel experiment, some impurities got mixed in—specifically trace amounts of silicon. But I noticed that the resulting waste material was extremely hard, and that gave me the idea for Philippe's milling machine. In fact, he used a patent licensed by the Royal Iron Refinery."
