The Smitsen NP320 2-thread is the ultimate 2-thread Sewing machine for Geotextiles. It can sew thicker material and is designed from the ground up to work with 2-threads. If you are working with Thicker material such as the Thick jute or multiple levels of Geotextiles the is the ultimate machine. Also the threading is accessible via a door on the machine. Extra Big Thred Stands are available for bigger thread.