The primary manufacturing process is casting to form the basic shape of the plastic switch and resin globe. The secondary process is drilling to fix the product to the shoes and protect it from dropping. The tertiary processes are joining to connect the electrical circuit with wires and assemble it to the shoes, and painting to make trendy shoes. The material and manufacturing processes are compatible with the product geometry. The normal load on the material is from foot weight and increasing temperatures, but it can withstand loads and be kept away from direct sunlight or water. The total manufacturing cost per part is calculated to be 17 Baht considering material, tooling, and processing costs.