Bernina 530 Manual - Page 35

C) 0 The cord loop projecting beyond the back end of the sewn buttonhole, is tightened in such a way that the loop under the back fastening disappears. Then the two thread ends are cut (Fig. 44). C. The raised buttonhole This buttonhole is sewn with a slack lower thread tension and a strong upper thread tension. The upper thread tension has to be so strong that the bottom thread appears in a straight line on the upper side of the cloth. For raised buttonholes, the top thread must be unglazed, 6-ply, No. 4 thread, while a very thin thread is required for the bobbin (60/2). Adjusting the machine from automatic buttonhole sewing to zig-zag or straight-stitch sewing Push lever a (Fig. 28) forwards into the position in Fig. 29. The zig-zag lever 12a can now be moved as desired beyond the stops 1 and H from 0 to 4. Move lever 13 into the vertical position. Again press the stitch length lever 16 towards the machine, the ball-shaped end turned to the left until the zig-zag mark (Fig. 31) until the zig-zag mark shows on top. Fig. 41 64 Buttonhole without using the automatic Buttonholes may also be sewn without using the automatic buttonhole device. In such case check that 1. the lever 12a (for actuating the locking catch) is in position for zigzag sewing; 2. the stitch length lever, i. e. its ball-shaped end, shows the zigzag mark (Fig. 31); 3. the needle displacement lever is set to its normal " left" position, i. e. not in position opposite the mark on the zigzag knob, as is correct for automatic buttonhole sewing; 65