This is an easy to print rotary sharpener that will fit any desk or drawing table. I am using this sharpener with my 2mm Caran d'Ache Fixpencils and my 2mm Kita-Boshi 2mm pencil.

My oldest mechanical pencils are over 30 years old. They never failed. I suppose the use of these mechanical pencils that last so long has a beneficial impact on the environment over traditional pencils.

2020-02-28 update:
The added file fixpencil_3mm_BIC_2mm_sharpner_ingress.stl is to be used with the Caran d'Ache Fixpencil 3mm or the BIC Criterium 2mm.

To complete the assembly you will need to build an abrasive ring by cutting a cone of revolution out of sand paper and glue it to the 3D printed ring. I would recommend to use water resistant glue as the sharpener is subject to regular water cleaning. A template is provided made available to download and print in order to facilitate the build process.