Bobbin Case Questions

[Marcelle]

Can someone explain the difference between the bobbin cases with spring and without spring? I have an Amaya XT.

What does the spring do?

Can the two be used on the same machine or does it matter which is used?

Thanks,

[gcannon]

The spring is a "backlash" device. When some embroidery machines trim, they have a tendency to whip the bobbin thread right out of the pigtail. I don't use them on the Amayas, because I haven't had this problem. I have a clunky old Tajima that I did use them in years ago, though. You can, at your discretion, use them in the Amayas if you choose to. Amayas, I have found, are like their owners, one of a kind- each and every one of them!