Cannon powered by printed spring & cannonball

prusaprinters

<p>The cannon contains a 3D printed spring. It is able to fire a cannonball a few meters. The included cannonball is perfectly rounded, which is achieved by dividing it into 3 parts (2 hemispheres and peg).</p> <p>I've printed it from PETG, but PLA or other material should be suitable as well.</p> <p>It could be printed without any supports.</p> <p>It was designed in Fusion by my 12 years old son :)</p> <h3>Print instructions</h3><p>no supports needed</p>