This is the working cannon, with an added autoloading mechanism. It has a spring to shoot cannon balls. Use the hinge to aim precisely. Print as many cannon balls (included) as you need. Print it as a toy for your kids or present it to friends as a gift.
Bugfix 25.7.2022: loopers found that the “pip_cannon_VN_autoloader_CannonOnly.stl” and “pip_cannon_VO_autoloader_cannonPlusBase.stl” had the plunger not all the way down. I replaced the two with fixed STLs now. Thanks!
The autoloading mechanism can hold 2 cannon balls. Each time you pull on the spring, one ball will fall into place. Once you let go, the ball will shoot out. Then reload the second ball by again pulling on the spring.
But make sure you angle the cannon slightly up, otherwise all balls will fall out in one go when you pull on the cannon:
Use the cannon as a permanent display on your desk, ready to fidget or defend yourself whenever needed.
Thanks to jonng for his idea to create also an autoloading huge version, and for the great picture of the print being examined by his cat.
Thanks to nadanoob99 to point out the issue of priming the cannon which lead to this design.
The author remixed this model.