I love discovering new materials especially anything closely useful for creating soft circuits. Meredith Scheff made these awesome thin, flexible PCB boards using DuPont’s Pyralux Copper Clad Laminate.
The material is thin enough to sew through using a sewing machine. I doubt it’s washable but it looks pretty fun to play with. To create the resist for her flexible PCBs, she used black Sharpie markers. Check out her process here. Now it’s time for me to contact Dupont!