This kit contains the necessary components to allow you to cut foam with a hot wire. The kit was designed with the ability to be adapted to an existing CNC machine or as a stand alone, stationary unit. This is an ideal addition for sculpting and crafting foam for a variety of hobbies and projects. As a standalone unit, this kit can be mounted to a table and give you the ability to cut foam manually by hand. It can also be adapted to your CNC machine for precision cutting and shaping. The variable voltage device allows you to easily control the heat of the wire depending on the application.