Gridfinity 1x1 pencil holder

There are many other #gridfinity pen/pencil holders. This one is mine. It's for 8mm pencils, with a 2.5 degree taper on the holes.

I've shortened the holes for the screws in the underside, since I only ever use the magnets.

This model was built using CadQuery, see the source code here: https://github.com/sffubs/gridfinity/blob/master/pen_pencil_holder.py