What is the point in bobbins?
What Does It Do? In general, the bobbin is the thing that feeds the thread to stitch from the lower part of the machine. Its purpose is to hold the thread below the needle, and it is where the thread in which you stitch comes from.
Why use bobbins with bite alarms?
One of the principal uses of a bobbin used in conjunction with a roller wheel bite alarm is to aid registration of line movement over the wheel. The roller wheel construction accounts for 99.9% of alarms sold… apart from Delkims which use a ceramic insert that detects line vibrations.
Why is my bobbin thread not catching?
Check the upper thread. – Check to see if your upper tension is too tight. … – Your thread could be caught on something between the needle and your spool of thread if so, your thread will be too tight for the needle to pick up the bobbin thread. – Make sure that the upper thread is threaded properly.