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Showing posts from October, 2011

Periscope

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Materials: • 2'' x 1-2' cardboard tube (we used a Uline.com kraft telescopic tube # s-1634, but any non-telescopic tube of about this size works fine) • Black foam core (you can use other colors but we find matt black to be the least distracting when looking through the periscope) • 2  2''x 3'' acrylic mirrors (we get ours pre-cut in 2'' strips by tap plastics) Tools: • Pencil • Metal ruler (to measure and cut against, a carpenters square, drawing triangle or T-square can be helpful for making perpendicular lines) •X-acto/ utility knife • Hot glue gun • A fine toothed wood saw (for cutting the acrylic mirror if it is not precut) The first and only particularly involved step of of making a periscope is to draw and cut out the foamcore mirror holders.  The pattern above will make both the top and bottom mirror holders at once, as long as the vertical and horizontal line are perpendicular to each other.  The only important dimensions are