it shouldn't matter if you mix brands.
the bobbin thread should be either the same weight as the top, or lighter.
so ... if 50wt on top, then 50wt or 60wt in bobbin.
most thread sold as quilting thread is 50wt.
most thread sold as "bobbin thread" is 60wt - usually for machine embroidery.
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- necessity is the mother of invention. lazy is the crazy aunt.
