After you make the cut outs cut a
9" length of the Burke tube. The easiest way to cut the tube is with
a table saw but it can be done with a hand saw. The picture shows the Burke
tube cut to the proper length.
Draw the outlines for the four windows
in the Burke tube with the marker and cut out #2. Space them equally around
the circumference of the tube. To draw the outlines, you'll need a thin
black marker and cutout #2.
©2013 The Exploratorium, Pier 15, San
Francisco, CA 94111
|Place the cutout on the bottom of Burke tube. Make sure the
cut-out is rightside up (the slits on the side should be on the bottom).
Draw around the inside of the cutout window.