![]() Drill a 1/4' hole in the piece that is 14' long and 2. Chisel out the wood to make a notch like shown. On the 14' pieces saw halfway through the wood 5 inches and 6 1/5 inches from the top. The next piece for our catapult is the housing for the swinging arm that will. Drill a 1/4' hole in the pieces that are 14' long and 1.5' wide, 3 inches from the top of each piece. To begin the catapult needs a base to stabilize it. Make sure your loops stay anchored around your broom handles. DIY Catapult Step 1: Creating the 'outer' Base.To achieve the tension necessary to throw a projectile, you must finish lacing by going through the frame holes, around the broom handles in loops, and over and under the throwing arm. After securing your rope to arm and frame, you should not continue threading your line through the throwing arm.The more twists you add through your over and under motion, the more tension and greater force your catapult will have. ![]()
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