While the industry standard spring tensioning proves sufficient in narrow machines, once the wire length reaches 3 meters it is almost impossible to stretch ir properly with a spring. That is why all our widest hot wire CNC foam cutters come with pneumatic wire or motor/electric tensioning system. Pneumatic tension is available in all single wire, double wire and MultiWire CNC machines.
Note: An air compressor is required for wire tensioning on machines equipped with pneumatic wire tensioning; however, it is not included with the machine. Please make sure to provide your own standard, small size compressor with the tank of at least a few litters (the bigger the tank the less often it will turn on). Recommended pressure is app. 5-6 BAR (0.5-0.6 MPa). You’ll need fittings that will fit a plastic/rubber hose-pipe with the inner dia of 4mm and outer dia of 6mm.
