RESISTANCE
- hand sewn 8” trace has a resistance of 100 ohms
- machine sewn top thread 8” trace has a resistance of 250 ohms
- machine sewn bottom thread 8” trace has a resistance of 125 ohms
THREAD QUALITY
- easy to thread a size 24 crewel needle
- frays or whiskers
- easy to sew by hand as well as machine
- thread is wound on an industrial spool and has to be rewound on a bobbin for machine sewing
RECCOMENDATIONS
don’t recommend
too thin and pesky to sew with
high resistance
MANUFACTURER
Hand sewn LED circuit on cotton broad cloth with felt backing.
Positive and negative traces are 8 inches long.
Threads a crewel needle size 24 easily.
Hand sews a basic running stitch with few tangles or difficulties.
1.8mm blue LED with 4 tight loops around the LED leads.
Use a fresh 3V CR2032 battery to power the circuit.
LED glows = empirical evidence that the thread is conductive
Machine Stitching with a Schmetz Embroidery Needle 90/14
Machine stitching sample
top trace is Stainless Steel 117/17 thread as top thread
bottom trace is Stainless Steel 117/17 thread as bobbin thread
both methods sew smoothly without snags or fraying
The reverse side of the machine sewing sample
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