STEP 23
T
he next step is to use the plastic cord
fasteners (P-straps) to secure the electrical cord inside the light source.
Attach the first one to the cord and secure it to the wooden disk. Use the
remaining 1/2" #6 pan head sheet-metal screw to attach it.
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A
ttach the second P-strap to the side
of the Burke tube where the 1/8" hole was drilled in Step 13. To secure
this P-strap, you will need the bolt and the hex nut. Compare your work
with the picture on the right.
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Exploratorium
,
Pier 15, San Francisco, CA 94111
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