“…In the original CaPaMan prototype, all the components are machined from metallic parts, and industrial-grade motors are required for operations. The following improvement from 2017 [21], which is shown in Figure 1b, kept this structure; with 3D printing development, it became possible and expedient to change the material of the mechanism to plastic. Smaller and cheaper motors could also be used to operate, because less torque is needed for the smaller masses.…”