This rocket engine started as a pile of copper dust.

This rocket engine started as a pile of copper dust. I had Claude Opus 5.5 build the metal 3D printer that makes it, so you can watch. Four lasers, one blade, 9,625 layers, and 36 cooling channels hidden inside the wall. Guess how long the print takes. https://t.co/FZeVtA1Iqg