The present invention relates to a machine arranged for sawing micro trenches and placing ducts/communication cables in micro trenches, said machine comprising a saw blade arranged for sawing a micro trench in an area; said machine further comprises a stabilizing device arranged for stabilizing the walls of said micro trench when placing ducts/communication cables into said micro trench, said stabilizing device being positioned immediately behind said saw blade in said micro trench, and said stabilizing device comprising guiding means for guiding at least one duct/communication cable when placed into said micro trench.