Introduction: Knex Jump Arm Lift.
The jump arm lift brings your knex balls in a really cool way 30cm high. The lift is not to slow and works about 99%. The lift will be on my YouTube channel: thibault art.
Step 1: The Shooter.
Step 2: The Pieces for the Arm.
Step 3: The Input.
awesome. You finished the jump arm lift!!!!!
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