Sewing machine accessories, like bobbins, seem to have a way of being held over from machine to machine. Often a box of bobbins wound with glamorous colors finds its way into a new sewing machines bobbin collection. The size of a bobbin must match precisely with the machine’s bobbin area. Just because a bobbin seems to be a similar size, the slightest difference can wreck havoc for its owner. A sewing machines bobbin case tension is properly set based on the machine’s correct bobbin type. If a machine uses plastic bobbins, the tension will be set differently than to a machine that uses a metal or heavier bobbin. Switching between plastic and metal bobbins will result in an unbalanced tension.
Bobbins that are too tall will interfere with the stitch formation especially for machines with drop in bobbins. When a stitch is taken, thread will not be able to clear the top of the bobbin resulting in a wound up mess in the bobbin area.
To avoid unnecessary headaches, ALWAYS use the bobbin specified by the sewing machine manufacture. If you are unsure, which bobbins are the correct fit for your machine, stop by our service window with your machine’s make and model and a sampling of some of your bobbins.