Safety lockout with a tether attachment point. While the quick stop button on the Falcon2 is a great safety feature, it often gets pressed during loading and unloading. This is a pain as it requires a reboot etc to get up and running. The safety lockout prevents the button from being pushed while loading and unloading projects and is Easily removed during laser operation. I printed in PETG 240c nozzle and 85c bed and used a raft to stabilize. You must remove the cutout during laser operation to ensure the stop button will work.