The BERNINA virtuosa 150/160 manual gives examples for two different setups: specialty threads and a double needle. Keep each example tied to these models and the cited manual. A dial number or needle width from this guide is not a general BERNINA or household-machine setting.
| Thread | Manual’s example | Qualification |
|---|---|---|
| Metallic | Needle 90; upper tension approximately 3 | The manual says unusual threads may need a suitable needle and tension adjustment. |
| Monofilament | Needle 80; upper tension approximately 2–4 | Treat this as a model-specific example and test the actual thread. |
For visible hems in stretch fabric, pintucks, or decorative sewing, the manual lists a 130/705 H DO double needle in widths of 1.6, 2.0, 2.5, 3.0, and 4.0 mm. This list does not prove that every width clears every foot, plate, stitch, or fabric setup. Confirm the model’s manual instructions and check the needle path before sewing.
Test the exact thread and fabric#
The manual’s tension examples do not promise a balanced stitch on every thread, fabric, or stitch. Begin with the cited model instructions, make a test sample using the actual materials, and change one setting at a time. If the needle contacts the foot or plate, stop. Use a current manual for the exact virtuosa 150 or 160 variant if its controls differ from the cited English edition.
For general eye-fit and thread-construction guidance, see matching sewing thread to a needle. The twin-needle hem guide covers shared clearance checks.