A long blade utility knife;
How to cut styrofoam ball in half. You can cut a round styrofoam ball in half by tracing a line along its equator with a sharp pencil. How to cut styrofoam ball in half Divide round styrofoam balls by cutting them down the middle.
You can cut a round styrofoam ball in half by tracing a line along its equator with a. Divide round styrofoam balls by cutting them down the middle.