OLD METHOD - drilling upper core speaker grill if using original core file

We now have a file that includes these holes.

If possible, I recommend printing the updated core to save time and eliminate these steps.

If you are mounting a speaker in the core, you will have to drill out the 5 lower rows of mesh to act as a speaker grill.

To have more control, I did this by hand (with a pin vise) using a 7/64 bit. First I pressed a scratch awl in the center of the indent. The makes a dimple to help the drill start cutting in the right place. When finished, I used a small rat-tail file to clean up the holes if they needed it. It took about 1 minute per hole. Start with back holes in case you mess up. I drilled out all of the holes, all the way around that are inline with the red boxes (8 groups of 8 and 8 groups of 12).  We now have a file that includes these holes.

These are the tools that I used for this tedious task. Notice the wooden dowel wrapped with duct tape in the bench vise. I slid the core on this dowel to steady it while drilling.

OLD METHOD - Plunger and exterminator gun using original core file

Using the plunger and gun holes in the shoulder section as a guide, drill two 1/8  or smaller holes through the core.

These holes are required to pass the ends of the plunger and exterminator gun. The gun hole will pass a 2 pin connector and wire from then the gun LED.

Remove the shoulder section and enlarge the new holes in the core to 3/8 inch (bigger is better).

Use a reamer or progressively larger drill bits. These holes can be sloppy, they won't show when the Dalek is assembled.

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