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3. Use a marking pen to mark where you want to place the LEDs on the
   plywood to show the outline of the dolphins.
   We used 38 LEDs per dolphin. We spaced the marks about 1^1 ⁄ 2 " apart in
   the parts of the dolphin where there was little change in shape. Where
   the dolphin’s shape was a bit more complex (for example, the nose and
   tail), we spaced them more closely.


4. Drill test holes in a piece of scrap wood to determine the size of drill
   bit that you should use to give a press fit for the LEDs.
   We used a^13 ⁄ 64 " drill bit.


5. Drill holes for the LEDs at the locations that you marked in Step 3.
   The plywood after drilling is shown in Figures 10-14 and 10-15.

Figure 10-15:

A closer

look at the

dolphin

templates

with all

holes

drilled.

Figure 10-14:

The

plywood

after drilling

holes.

230 Part III: Let There Be Light