A good way for beginners (or those who knew and forgot) to check their tensions is to look at the back of the embroidery. About 1/3 of the thread - the center third -should be bobbin. If the bobbin thread spreads to the edge, then either your top tension is too tight, or your bobbin tension is too loose. Conversely, if not very much bobbin shows, your top tension is too loose or your bobbin tension is too tight.

If you have more than one needle per head, here is how you can determine which ten...
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