Here is a really big DIY 3d printer with two 3d printed hobby rockets. It looks like it is some 2 meters tall has some 1 square meter build surface.
Supporting structures appear to be CNC routed from some type of wood.
This machine is the "Printzilla" made in fablab Moscow by Michail Michalin and Vladimir Kuznetsov. It has 0,8 x 0,8 x 2,0 meters printvolume.
Here is the facebook video of it in action:
BTW: I like the CNC cut chair behind it :-) You can find plans for it at:
Source: unknown. Please let me know if you have any additional information about this project. Friend of mine sent me this picture without any context and google image search is also not helping.