- 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
- 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
too thin and pesky to sew with
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