This zigzag sewing machine is capable of powering its needle through 7 mm of Dacron, Kevlar, Webbing, Canvas and leather; The hook containing the lower bobbin is twice the normal size, resulting in fewer bobbin changes and in combination with the vertical take up lever system, it is of particular use when using thicker than normal sewing threads; 9518 (similar to Adler 525) is recognized as the best spinnakers sewing machine in modern sail making industry, standard supplied with 4 cams for straight stitch, 1-step (2-points), 2-step (3-points), 3-step (4-points) zigzag.

Click here for video 1    Click here for video 2