First iteration:

The first copper thread heating circuit (below) was created with a backstitch. After in-class debugging we found its resting-state resistance to be too high for our purposes (~67 Ohms). When we press on the circuit, we can close air pockets between stitches, creating significantly lower resistance (~10 Ohms). I’ll iterate on this swatch with a new stitch that has less resistance, and will post an update with new results.

 (no pressure applied – 67 Ohm)

 (pressure applied – 10 Ohm)

12/20 update:

A new stitch does the trick! I’ve redone these using a couch stitch, which reduces the resistance significantly.