Tip & How-To about Sewing Machines
This is almost always because the needle is inserted wrong. The needle shank has a flat side and this flat side has to be inserted so it faces a certain way. In my experience, in most modern machines, the flat side faces to the rear (away from you), but the best way to know for sure is to consult your instruction manual.
If the needle is bent, the top thread won't pick up the bobbin thread, so if you're sure the flat side is facing the correct way for your machine, check to see if the needle is bent.
Posted by Robbie... on
Generally, this is because the needle
is inserted wrong or because it's bent. In the first case, the top
of the needle (called the shank) has a flat side-this has to be
inserted so it faces the back or away from you.
In the second case, when a bent needle stops the top thread from picking up the bobbin thread. Even if you think your needle is fine, change it to see if this solves the problem.
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