Step 2: Clay Comparison
Comparison of conductive materials used
The main conductive materials used are:
Conductive thread: conductive thread worked best in both creating jewelry and creating heat in the thermochromic clay. It used the less power compared with conductive fabric. It created more heat compared to copper tape. Conductive ink on paper was also considered by painting on a piece of paper and inserting the paper into the clay. The procedure was difficult and was abandoned. In the future, I plan to also experimenting with painting on dried clay. However, since conductive silver ink is expensive, it may not be the best option for the kit.
Conductive clay: conductive clay was used in the brooch project. It was created by mixing carbon powder with clay. The clay was fairly conductive when dried, It heated up and cooled the crystal thermochromic ink very quickly. This is an area I want to explore more and create more projects. Some downsides are that the clay is black in color, thus may not be appealing when not used with crystal ink. The clay is also brittle and cracks easily. More experimentation with percentage of carbon powder and clay needs to be documented to derive the best combination.
Step 4: Thermochromic Brooch - Pendant
Adding on the electronics