Building a Table Catapult


How to Build a Table Catapult

The catapult is a weapon used to hurl heavy objects at enemies. It started as a medieval weapon, using a hinged lever and propulsion in a method similar to that of a slingshot. Recreating a full-scale replica of the ancient weapon is a major undertaking. However, making a tabletop catapult for fun or for a school project requires little more than craft sticks, masking tape and a rubber band.

Instructions

    1 Cut 10 clean Popsicle sticks or craft sticks, using scissors. Cut one stick 3 inches long and one 4 inches long, keeping the rounded end on each of the sticks. Cut three pieces 2 inches long and six pieces 4 inches long, removing the rounded ends off the pieces.
    2 Place a 2-inch stick end to end with a 4-inch stick. Wrap a 6-inch piece of masking tape around the two pieces of sticks to secure them. Place a second 2-inch stick end to end with the 4-inch stick. Wrap a 6-inch piece of masking tape around the two sticks. Place a 4-inch stick end to end with the second 2-inch stick. Wrap a third piece of 6-inch masking tape around the two sticks to create a line of four sticks, alternating 2-inch and 4-inch lengths.
    3 Bend the long stick at a 90-degree angle at each of the three taped connectors to create a rectangle. Use fourth piece of 6-inch masking tape to secure the last corner to create the catapult's base.
    4 Place a third 2-inch stick inside the rectangle you created in the prior step. Position it flat against one of the 2-inch sides of the rectangle. Wrap two 6-inch pieces of masking tape around the two 2-inch pieces to secure them together. Keep the tape on either side of the sticks, keeping them off the center.
    5 Place two 4-inch sticks flat on your work surface, side by side. Line up the ends of the sticks, then wrap a 6-inch piece of masking tape around the ends of the sticks to secure them. Repeat the process with two more 4-inch sticks.
    6 Place the two sets of 4-inch sticks on top of the rectangle you made in Step 3. Align them the length of the rectangle, one flush against each side, leaving a 2-inch gap in between them. Secure them in place with four pieces of 12-inch masking tape.
    7 Cut a large rubber band to create a straight line instead of a loop. Place one end of the rubber band against the rounded end of the 3-inch Popsicle stick. Position the end of the rubber band 1-inch down from the rounded end of the stick. Wrap a 6-inch piece of masking tape around the rubber band and the stick to secure. Insert the other end of the stick into the rectangular base between the two 2-inch sticks from Step 4.
    8 Stick a 2-inch piece of masking tape onto your work surface, sticky side down. Place a second, third and fourth piece of 2-inch masking tape on top of the first, all sticky side down, to create a four-layer, 2-inch long piece of masking tape. Cut the strip in half to create two 2-inch pieces of four-layer masking tape, making the hinges.
    9 Place the two masking tape hinges from the prior step on either side of the remaining 4-inch popsicle stick with the rounded end. Position the hinges, one on either side of the stick, on the cut edge. Line them up 1-inch down from the edge, pressing the sticky side to the stick. Wrap a 6-inch piece of tape around the hinges and the stick to secure it.
    10 Put the stick from the prior step into the catapult base, positioned in the open section. Put the hinged end against the stick from Step 7, with the hinge folded up and the rounded end of the stick pointing out the other side of the base. Wrap a 6-inch piece of masking tape around the stick and the hinge.
    11 Attach the other end of the rubber band from Step 7 to the hinged stick from the prior step so that the hinged stick hangs at a 45-degree angle. Attach the inside of a small batch box to the rounded end of the hinged stick, 1/2-inch down from the end, using masking tape or hot glue to finish the catapult.



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