Knex Ball Element “wrench” By Mechanical man in LivingLEGO & K'NEX66911Introduction: Knex Ball Element “wrench”By Mechanical manFollowMore by the author: This simple knex ball element will lower the ball to another track with a fun click Supplies You will need 1 big gear and 1 medium gear and a rubber-band and classic knex Step 1: The BodyStep 2: The Ratchet Step 3: ArmsStep 4: Put It TogetherStep 5: Ball Chutes