How could they use this planetbuster cannon to disable a Spline? If they simply shot off black holes, the tiny singularities would pass through the flesh of the warship. No doubt tidal and other effects would hurt the Spline as the holes passed through, and maybe they’d strike it lucky and disable some key component... but probably not; the Spline was a mile wide and the wounds inflicted by the traversing holes would surely be not much worse than isolated laser shots.
-Timelike Infinity, Ch. 10