This is an alternate switch for the uhltimate Gauss Cannon design at https://makerworld.com/en/models/205695#profileId-225821
It has 4 benefits:
- You can see if marbles are in the entrance or exit.
- You can load the exit marble from the top. It just rolls in place.
- It is possible to reload the cannon (moving the input marble to the exit position) by turning the switch in either direction (assuming there is no marble in the exit position).
- It's just more interesting to see the marbles inside the cannon, even if just when turning the switch to reload the cannon. The original design was a “black box” with no view into the inner workings.
This design is available on TinkerCAD if you want to modify it: https://www.tinkercad.com/things/6vibL3Pt9OL-alternate-switch-for-uhltimate-gauss-cannon-for-gravitrax
Also see my remix of the spring ends to use with this model at https://makerworld.com/en/models/206175#profileId-226324