For the internal components, the gearbox housing and other plastic parts exhibit the same material properties as the external ABS parts, suggesting they are likely made from the same material.

However, the gears, impeller, and other internal components display different material characteristics. A key material identified in these parts is nylon, which is commonly used in prefabricated gears and motor components (Curbell Plastics, n.d.). , n.d.).

Testing revealed that these parts exhibit greater flexibility, bending more before breaking, unlike the ABS shell. This flexibility is a typical trait of nylon components (Curbell Plastics, n.d.)