STEP 19
S
crew the top back on the porcelain fixture.
Then put in a 200-watt clear bulb with an axial filament, plug it in, and
turn it on. If it doesn't work, unplug it and check your connections, and
go back to
Step 17
.
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STEP 20
N
ext, drill ventilation holes into the
wood disk. These holes keep the Light Island from getting too hot.
Put
on your safety glasses
. Secure the wood disk with the C-clamp. Using
a 1" bit, drill five holes around the fixture.
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©2013
Exploratorium
,
Pier 15, San Francisco, CA 94111
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