Makedo Safe-Saw is easy to use. Made from sturdy steel, it has zero sharp edges so can easily cut cardboard (and not fingers).
To use the Safe-Saw, turn it upside down to punch holes as a cutting guide (if needed). Then, flip it back around and use the serrated edges to easily saw any thickness of cardboard, moving the tool back and forth as you go. Age 5+
Makedo conforms to EU REACH / EN71 toy safety standards.