The popular MCut BASIC 3-axis CNC router with gantry height increase and Bornemann hollow cutter tool for suction milling of foamed plastics (eg. polystyrene foam, styrofoam, polyurethane).
The Bornemann milling tool is often used to make large molds that are used in the production of composite laminates.
The Bornemann cutter itself works in the same way as other cutters designed for EPS foam. The main difference is the chip extraction method, and the cutter can also be very large.
It's a Coner milling plotter with a raised gate, increasing the working range of the Z axis.
Further details: MCut BASIC 3-axis CNC router