This model is for industrial and commercial profit. Plastic sharpener for office/schoolar use, to be made of polypropylene plastic avilable for bothe opaque and tranparente use. the parts are in optimal dsign of thikness, draft angels,shape and core/cavity design Intended for plastic molding manufactur process The files I uploded are parts and assembly files, modeled using solidworks-2017. You can contact me for any required modifications. thanks...