Making side dots from bone is relatively easy when you start with small, square, bone blanks. These are about 5mm by 5 mm.
Chuck the blank into the drill press so that it stays centered while spinning. Now, simply wrap sandpaper around the blank, squeeze and move up and down. (trying to avoid the obvious "squeeze the bone", "slide up and down on the bone".....oh look....I said it anyways!)
Once you get to the desired diameter, slide out more blank, and repeat....
...until...wallah! A bone skewer!
Diameter looks about right..
...and these should be enough for one neck.
How do they look Hal?