Hardware Reference
In-Depth Information
An example layout of the three diferent layers of plywood is shown in Figure 17-5. You will
need one front piece and a set of beam A and beam B pieces for each beam.
Figure 17-5:
Cutting plans
for plywood
sheets.
Ensure that you use exterior- or marine-grade plywood, as these grades are suitable for use
outside. Other grades may disintegrate, potentially while birds are nesting! Also if you use
glue, ensure that it's waterproof, and nontoxic!
To hold the sensors, cut ive pieces of plywood the same size as the front of your nest box.
Cut a hole in all ive, the same size and in the same place as the nest box opening. Check that
they all align with the front of your box, and then put one piece of plywood aside. his will
become the new front of the box.
You need to cut a slot for the sensors in the four remaining pieces of plywood. Draw a hori-
zontal line across the middle of the entrance hole where the beam will be. Mark out 3 mm
above and below the line to deine a slot where the light beams will be.
It's better to have the slots horizontal so that they don't ill up with feathers, dirt, muck and
such as the birds enter and leave the nest.
