Serger?? I read that using black thread within the serger can mess the undamaged entry up.?
Answers: I'm not sure why your manual would influence not to use black thread. As long as the threads are made of the same content, I don't see the difference. Having worked contained by a garment factory previously, I have see black thread used in the commercial sergers. However, the dark the thread and/or fabric, the more die residue is vanished behind, both on your work clothing, and possibly contained by the workings of the machine, as resourcefully. Why not call the businessman and ask this question. There's probably a customer service phone number or website programmed on the manual.
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