Check this Torsion Ballista made of lasercut 3mm cardboard! We got inspired by Leonardo Da Vinci's weapons.
Thank's to Francesco Petracca and Fulvio Gabriele Volpi
Step 1: Drawing for Laser Cut
Step 2: Assembly the Components
Assembly the components and paste the wings of the torsion springs.
Step 3: Make the Torsion Springs
use elastic bands fot the torsion springs. You can alter the tension of the torsion springs changing the position of the screws in the 3 holes in the front.
Wind the springs...