Following the pioneering demonstration in late January 2012, in which a modular 8-meter wall was assembled in 1:1 scale by 13 consecutive self-positioning of the mobile fabrication unit in an unknown environment (the parking space of ETH Zurich), this month, mainly the focus was to document and publish the progress achieved so far, in addition to the preparations done for the fourth demonstration. Next demonstration will involve all 3 of the objectives; being mobility, man-machine interaction and handling of material tolerances; also with the intention being to alter the local reference system into a global one in several terms. Also, the main progress involving Task 3 is concluded, still, this progress will be used in the 4th demonstrator.