This seems pretty cool and seems to cost around $250 I think it would be an awesome project for the hive.
http://hackaday.com/2017/03/20/hanging-3d-printer-uses-entire-room-as-print-bed/
This is going to require people of different skills. I am not sure what all to say about it. What is people’s thoughts?
Well, there is at least temporarily room for it. My worry would be the suspension of the head, I did a lot of hanging on ropes, and I can tell ya, there is a lot of bouncing around. If I recall, blue water was 4-6% stretch, old old pmi was 1-2% stretch, dynamic rope is 6-9% stretch (rock climbing) and laid rope (braided) is up to 14% (strange thing about rock climbers… none use braided rope, gentler catch and more abrasion resistant… especially perpendicular to axis, but hey! it’s all good right?) Dunno about steel cable, I think it is 1%. The old joke was pmi was less stretchy than steel cable. Anyway… stretch/bounce aside… you have the tyrollean traverse effects to account for, because if you do not sag between attachment points, weird dynamics happen at the attachment points. Okay, we’ll assume nothing exceeds the breaking point. In the middle of the build, the bounce for this will be at it’s max, and as the head will be moving about, just like plucking a guitar string in the middle.
There is some method to adjust and calibrate the absolute positioning? If so that is one slick system…
Anyway, could always be scaled down, say 4ft x 4ft x 4ft and test the concept.
Would be slick to print the maker robot logo at the maker faire… it’d be bang up publicity. Speaking of… I bet the current larger printer could do one.
This also looks interesting:
http://hackaday.com/2016/10/14/maslow-brings-the-wall-plotter-into-the-woodshop/
I love seeing these crazy 3D printer hacks 
Although after doing some sizable prints on the gigabot, I can imagine how LONG it would take to print something room sized…
Use bigger nozzles and filament?
A volcano nozzle from heck…
How big a size does filament come in?
There are the building printers. I remember one that printed a gazebo sized castle
I was at a trade show where they printed a car.
The build volume was big enough to hold a car (duh).
I think the nozzle was in the 5mm range. I think they used a heater/extruder that was stationary and pumped the melted goo to the head.
It took 3 days to print everything.
They post machined all the mounting surfaces and then bolted in the engine/transmission/suspension.
Drove it (slowly) around on the last day.
I think it was on the cover of Make: magazine a while ago.
Even if this turns out as a failure or slow as can be, for that price tag they are showing it would be a fun as hell project.