Bernina Sewing Machines - Recent Questions, Troubleshooting & Support
Sewing machine stitches upside down!
Sounds like you may need to have the tensions adjusted. If the bobbin thread is showing on top, the bobbin tension may be too loose. If the top thread shows underneath, the top tension is probably too loose. Since you are having both problems, perhaps a technician should take a look at it.
on Jun 14, 2019
I have a Bernina virtuosa
Never been serviced? Whoops, as an old tech, I'm not surprised, how often do you oil your machine and is it with quality Bernina oil or a light synthetic oil?
Have you checked the bobbin case tension? As you are using two types of thread there will always be some imbalance of tensions best when you are turning corners to slow down your movement that will help a bit, but you may have to tighten bottom tension
also another hint would be to use a Metallica or topstitching needle with a larger eye, allowing the upper thread to move more freely as the thread forms the stitches.
if you need further help
on Jun 10, 2019
What is a 1040 Bernina bobbin size please
You can tell a Bernina bobbin by the number of holes "7"
9mm diameter and 6mm width
the holes will be superimposed on each other so that in the newer machines the light sensor will work properly
less expensive Taiwanese, Japanese etc bobbins will have more holes. Also the centre tube on a Bernina bobbin is slightly smaller and thus will wind more evenly than a the alternative
on Jun 10, 2019
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