How to Indicate Polarity on Conductive Thread Traces

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Sew traces with conductive thread and red or black bobbin threads to indicate the electrical polarity.

Adjust the tension allowing the bobbin thread to pull thru to the fashion fabric so that the polarity is easily determined.
Bobbin thread color indicates the polarity of the sewn electrical trace

Reverse side of the fabric clearly shows the bobbin thread.
Bobbin thread color indicates the polarity of the sewn electrical trace

Keep bobbins wound and ready for action.
Bobbin thread color indicates the polarity of the sewn electrical trace
 

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