How do you smooth a Styrofoam ball?
Correspondingly, how do you make a styrofoam ball smooth?
When covering Styrofoam it can be difficult to keep a smooth shape. A perfect covering is done by applying the cover/seal in a thin layer and letting it dry. Then sand off any rough spots until the surface is perfect again. Then cover with another coat, let dry, and sand again.
One may also ask, what is the best way to cut a Styrofoam ball?
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 sharp pencil. Many styrofoam balls already have this line marked by the manufacturer. Use a sharp blade, a hot wire cutter, or an electric knife to bisect the ball.
If the glue does not say whether or not it is safe to use on Styrofoam, you might want to test it first. Some aerosol-based products, such as spray paint, can actually melt or dissolve Styrofoam. Because spray adhesives tend to be low-tack, it is best to use them when attaching large blocks of Styrofoam together.