The modern Cyborg does not so much excel in having a prosthetic arm that does everything - that would be similar to promoting rainbow colored unicorns: these do not exist.
The modern Cyborg works with modern tools for fast and good results. He thus sharpens pens reliabily and well.
Here is how.
The pencil must have a minimal length so as to fit into the electric drill. You need a pencil sharpener that fits the pencil you want to sharpen. And the electric drill should be sufficiently charged.