How to Make a Parallelogram Mount

Vertical Arm and Deck Chair Mount

• 1

  Put on your safety goggles. Cut two pieces of dimensional lumber with the circular saw, one piece to 12 inches, the other piece to 4 inches. The 12-inch piece is the vertical arm, the 4-inch piece is its foot.

• 2

  Place the vertical arm on your work surface. Using the t-square, draw a line across the 4-inch side, 2 inches from the top.

• 3

  Place the compass at the line's midpoint. Draw a 2-inch semicircle touching the parallel bar's top. Cut along the semicircle with the jigsaw.

• 4

  Line up your T-square with the midpoint of the vertical arm's bottom. Draw a pencil line all the way to the top. Counting from the top, place pencil marks on that line at 2 inches and 6 inches. Place the drill bit in your power drill. Drill completely through these holes.

• 5

  Line up the vertical arm's bottom with the center of the foot, so that both pieces form a T-shape. Secure the pieces with two 1-inch wood screws.

Swinging Mechanism

• 6

  Cut three pieces of one by one: 9 inches, 3 1/2 feet and 5 feet long. Place pencil marks along the center axes of all lengths of wood: at 3/4 inches and 8 1/4 inches on the 9-inch piece, at 3/4 inches and 3 feet on the 3 1/2 foot piece and at 3/4 inches and 3 feet on the 5 inch piece. Drill completely through these marks.

• 7

  Cut two pieces of dimensional lumber with the circular saw, one 2 inches long, the other 4 inches long. Place them together at the 4-inch sides, so that they form an L-shape. Fasten them together with four 1-inch screws.

• 8

  Slide a washer onto a 2 1/2-inch bolt. Insert the bolt into the vertical bar's bottom hole. Slide two more washers onto the bolt. Slide the 5-foot piece's 3-foot hole onto the bolt. Add another washer. Finger-tighten the nut.

• 9

  Slide a washer onto a 2 1/2-inch bolt. Insert the bolt into the vertical bar's top hole. Slide two more washers onto the bolt. Slide the 3 1/2-foot piece's 3-foot hole onto the bolt. Add another washer. Finger-tighten the nut.

• 10

  Slide a washer onto a 2 1/2-inch bolt. Insert the bolt into the 5-foot piece's free hole. Add two washers. Slide the 9-inch piece onto the bolt. Add another washer. Finger-tighten the nut. Connect the 9-inch piece's free end with the 3 1/2-foot piece's free end the same way.

Binocular Mount and Counterweight

• 11

  Screw the L-shape to the 9-inch piece with two wood screws at the L's short side. The L-shape must be flush with 9-inch piece's top and on the outside of the parallelogram. Screw a c-hook into the bottom of the L's long side.

• 12

  Place the lead weight pouch on the 5 foot piece's free end. Fasten it with duct tape.

• 13

  Clamp the parallelogram mount to a tabletop or deck chair with two C-claps. Hang the binoculars from the C-hook.