Generate a satisfying video of kinetic sand being cut and shaped. A clean, sharp knife slices through the smooth, flowing surface of the sand, creating perfect, clean edges. Each slice of kinetic sand should fall apart in small, satisfying chunks, showing the grains of sand in crisp detail. The lighting should highlight the texture of the sand, with subtle reflections from the knife's surface and a smooth, calming background that doesn’t distract from the action.
