Found an interesting article about this guy trying to replicate a D800 model using Styrofoam (i think).
https://www.facebook.com/yage.yang/media_set?set=a.487481484601227.128752.100000181382124&type=1
Sorry can't read the chinese words.
https://www.facebook.com/yage.yang/media_set?set=a.487481484601227.128752.100000181382124&type=1
Sorry can't read the chinese words.