You don't need to buy special tools. Take a pair of lineman's pliers, or any other wire cutters, I would assume, and place them on the ground with the levers perpendicular to the floor. Place your cable/housing, not both at the same time, inside the cutting surfaces. Give a purposeful whack with a deadblow hammer or a rubber mallet. A clean cut every single time. No filing or other work needed. You are good to go.