its bugged that it brings up the furnace/your inventory and that it wont accept the coal from there. exit that and open just your inventory, now hold+click control drag coal into furnace building it should accept it now.

i let this run until it ran into alerts, many. wouldnt build any more. due to not enough logisitcal robots and required materials not available. it got to near full completion of 26x26 cells which is nothing, ended on the right bottom side. it was likely 30 hours or less at 5x speed. http://puu.sh/w...