Bernina bobbins for vintage 530 630 830 930 1000 to1630

 There is a LOT of incorrect information on the internet, about vintage Bernina bobbins! Even in the groups for vintage Bernina sewing machines, the "experts" and moderators, or group owners, and owners of sewing and repair shops, and part suppliers, are regularly giving out incorrect information.

(Models 500, 530, 600, 630, 700, 710, 730, 731, 800, 810, 812, 830, 831, 900, 910, 930, 931, 932, 1000, up through 1630, the oscillating CV hook models) (Does NOT include the commercial and industrial rotary bobbin hook models)

Myth- Bernina bobbins don't have a cutout on the opening for the bobbin winding post, or spindle.

Truth- Bernina dealership parts illustrations and machine manual illustrations DO show a cutout for this. My BB and Bernina engraved bobbins DO have the cutout! Yes, there are also some high quality bobbins with the 7 hole sides, which do NOT have this cutout, but some do. 

Using a Bernina bobbin case IS important, for best operation of these vintage sewing machines. I did have a vintage Bernina 731 which did not have an authentic Bernina bobbin case, and while a replacement bobbin case that supposedly was for these vintage Bernina's, and did have the hole in the bobbin finger, for buttonholes and embroidery tension, the 731 was uncharacteristically noisey, kept jamming, and having stitch quality problems. A standard class 15 bobbin case, and bobbins, will cause these issues in the vintage Bernina machines, while switching to the original Bernina bobbin cases, and bobbins, corrects these issues.

Upon switching to a Bernina bobbin case, and bobbin, it sewed quietly, smoothly, no more stitch quality problems!