Converting Cardboard into 3D Print

I always wonder how Oculus Rift VR works. Thanks to Google, now I know =)

After watching Google I/O keynote, I immediately go to Cardboard site and download Cardboard Design Files =)

Google is very kind. It provide all that I need to convert Cardboard to CAD files.

For those that need the lens, I had do some experiments and found out that 25mm Round Magnifying Glass does the job (about S$4 for 10. Please send me a pair if you brought them :D). Of course you can buy the recommended lens by Google for US$28 a pair :p