:weareom:

The stereo was indeed the most complicated object to replicate, we manually produced it at twice the size. You can see pictures of each object and its replica here flickr.com/photos/43038809@N02/
You are also correct with the printer, it was on location and we calibrated the colours onset for a perfect match.

The lens we used was a standard 25mm, each background object was doubled or halved in size so that they would line up even at different depths. You can see the objects and their replica's here flickr.com/photos/43038809@N02/