In this mini project, I used thermochromic ink to reveal the shape of a baby whale in the sea. I used blue and grey embroidery threads to outline the whale body. When the conductive thread is connected with the heating circuit and the power source, the pigments around the thread will turn from blue to white like a splash of water.
Materials – Fabric, thermochromic ink, embroidery thread, conductive thread, heating circuit, 9v battery
Swatches with conductive thread