Now its time to mark out the positions of the cool white fibre optics. These are positioned as shown towards the outer edge, with five strands in each quarter of the circular base. A fine liner pen is ideal for marking the location of each strand, again using a light source to check everything is correct.
A good tip to get equal spacing of the bunch of five holes is to pick one quarter of the base, mark hole 1, then hole 5. The middle between these gives hole number 3, and the middle between these holes number 2 and 4.
Take your time marking out the fibre positions and always double check that they run inside the model shell, and not through any jointing clip sections. When you're happy with the layout, drill using a 1mm drill.