except the machine will continue to stitch in place (at the minimum speed) if you stop moving the machine
and weakness
It easily peels away with light ironing
Quilter's Paradise recommends that you use either a 28 or 45mm rotary cutter with a sharp blade
With Noelle's Festive Carols
Actuating Cam, Singer #163788 SIOC except the machine will continueGuaranteed to fit Singer Sewing Machine Models: 290, 629E1, 629E6, 629E7, 630E3, 635E3, 635E6, 635E7, 636E3, 636E6, 636E7, 638, 638E6, 638E7, 639J3, 639J6, 639J7, 640E3, 645E3, 645E6, 645E7, 646, 646E3, 646E6, 646E7, 648E3, 648E6, 648E7, 649E3, 649E6, 649E7, 668, 668E3, 737, 750, 750 13, 750E3, 755, 756, 756E3, 756E6, 756E7, 758, 758E3, 758E6, 758E7, 770, 775, 775 0167, 778, 778E