A key part of that design are the venting holes. They might not look like much, but the Xbox team put a lot of work into making sure they not only cooled the console, but also looked just right. “People have been punching holes in metal for over 100 years, right?” says Xbox hardware general manager Leo Del Castillo. “When we first started, if you asked the tooling engineer, ‘Can we punch these holes so close together that the webbing between them is thinner than the thickness of the material?’ We were told it couldn’t be done. When you get to that level of thinness it's going to start warping and bending. Our engineers took it as a challenge and decided to solve the problem.”