Ooooh baby. This tool is sweet. You can't get much better than this for shaping foam. You gotta have one. The metal rasp edge makes quick work of the surface but leaves it reasonably smooth. The handle configuration will have even the rank amateur throwing down some smooth looking shapes.
Compact and effective lightweight polypropylene molded body
Curved blade for increased stock removal
The blade also has side cut teeth for shaving in corners
Works on the pull stroke