confused can anyone explain

[devonwoody]

After watching the video below I havent grasped the concept.
(I can see attractive strip finishes could be obtained but this actual box displayed beats me)

Any ideas?

http://www.youtube.com/watch?v=UdkV97nm ... re=related

 

[SketchUp Guru]

Take a look:

http://www.alteredwood.com/
http://www.tonyward.org/

Do those help?