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Step 4Completing The Circuit
It turns out that nail polish resist puts on a very thin insulating layer over the conductive traces. You can make a simple conductive paint that will melt through this insulating layer to create a conductive glue joint. This means you can glue components such as LEDs, Integrated Circuits, resistors, conductive thread or wire anywhere on the conductive traces.
Make Conductive Paint
It is easy to make a conductive paint that is simply conductive glue that has been thinned down. It is thinned down with a solvent in order to stick well to the fabric and melt through the nail polish resist. For more details on mixing conductive glues and paints see:
http://www.instructables.com/id/Conductive-Glue-And-Conductive-Thread-Make-an-LED/
Mix the paint 1-1/2 powdered Graphite to 1 Liquid Tape to 1 Toluol by volume. Mix it fast and mix it well. Have everything you need to glue set up and ready to go as this paint dries fairly fast. Because it is so thinned out, you may have to apply two or three coats to get a thick enough connection to your components. This mix has strong solvent fumes. Do this in a VERY WELL VENTILATED ROOM or do it outdoors.
The conductive traces themselves will usually only add an ohm or less to the resistance. Each conductive glue joint to a component will add about 3 to 5 ohms.
Pic 10 shows the crayon resist circuit with one led lit. the Nickel Mesh fabric is transparent enough that the LEDs can be mounted on the back and the LED glow will come through.
Pic 11 shows the back of the crayon resist circuit.
Make Conductive Paint
It is easy to make a conductive paint that is simply conductive glue that has been thinned down. It is thinned down with a solvent in order to stick well to the fabric and melt through the nail polish resist. For more details on mixing conductive glues and paints see:
http://www.instructables.com/id/Conductive-Glue-And-Conductive-Thread-Make-an-LED/
Mix the paint 1-1/2 powdered Graphite to 1 Liquid Tape to 1 Toluol by volume. Mix it fast and mix it well. Have everything you need to glue set up and ready to go as this paint dries fairly fast. Because it is so thinned out, you may have to apply two or three coats to get a thick enough connection to your components. This mix has strong solvent fumes. Do this in a VERY WELL VENTILATED ROOM or do it outdoors.
The conductive traces themselves will usually only add an ohm or less to the resistance. Each conductive glue joint to a component will add about 3 to 5 ohms.
Pic 10 shows the crayon resist circuit with one led lit. the Nickel Mesh fabric is transparent enough that the LEDs can be mounted on the back and the LED glow will come through.
Pic 11 shows the back of the crayon resist circuit.
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