STEP 9
U
se the Burke tube as a template and
draw a circle on the piece of plywood. Use this as a guide as you get ready
to cut the plywood disk.
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STEP 10
P
ut on your safety glasses
, and get out your Saber saw and cut carefully around the outside
of the circle.
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©2013 The Exploratorium, Pier 15, San
Francisco, CA 94111
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