Reasons for the stitches to float and measures to prevent the thread from slipping out of bobbin case

Reasons for the stitches to float and measures to prevent the thread from slipping out of bobbin case 

The main reason is either the tension of the bobbin thread is too weak or the bobbin thread slips out from the bobbin case. When polyester or nylon threads are used, the bobbin thread often slips out. In such a case, lessen the amount of winding thread on the bobbin. Also, if some lubricant such as Vaseline is applied between the bobbin case shaft and the bobbin case slit, this defect will be eliminated.

Note : 

 

When the humidity is high and the air is damp, the resistance of thread against friction becomes too high. In such a case, loosen the tension of the needle thread, somewhat.

So apply this instruction and see results . If you have any question then please ask us , we will definitely try our best to reply you , thanks .