Videos like this are why I love the internet. It allows me to virtually be in a place that I would otherwise never step into in order to see a process I knew nothing about.

From the video description:

Technicians at Textron Defense Systems near Boston are applying Avcoat ablator material to some 330,000 cells of a honeycomb on the heat shield of NASA’s new Orion spacecraft. To ensure that each cell is filled correctly, they are individually X-rayed and a robot is used to machine the material, sanding off fractions of an inch so that the heat shield matches Orion’s precise plans.