Thanks to Wired, I no longer need to take my PS4 apart to see what it's made of. Let's be honest, I wasn't going to do that.
In their video, Wired had engineering director, Yasuhiro Ootori, take the PS4 apart very, very carefully while giving a rundown of each part all the way down to the tamper plates. It is incredibly interesting to see how easily everything is bunched together without being a behemoth of a machine. Bravo, Ootori san.
If you preordered the PS4, it will be yours on November 15th in the states. If not, you may be S.O.L.