The different rotor sizes allows versatility in the shape of pellets to dispense. It is, however, not designed for powders, that have very different aggregation mechanics and can also obstruct the mechanism by infiltrating the joints between moving parts. The upper limit for pellet size is imposed by the size of the holes in the rotors. In the case where some of the dimensions is very close to the diameter of the holes, the flow will be reduced and obstructions will be more frequent. In those cases, it would be necessary to modify the CAD files available in the repository to further customize the device. However, for the most typical sizes in which polymers are commercialized or that can be cut by a pelletizer, our dispenser constitutes a suitable solution to mix up to 8 different materials with an adequate accuracy.