A reverse gauss cannon that's resetable by pressing down the flipper. Watch the videos to see it in action. This was inspired by the Gravitrax Magnetic Kickback.

Rules Card Text Setup and Trigger: Press the flipper down.

Hardware

• Required | One 10x10mm magnet. Or five 10x2 Magnets. Any stack of thinner magnets equaling 10mm long will work, but will be a weaker launch compared to a single.
• Required | One M3x18 screw or longer.
• Recommended | A rubber band. Used for locking the flipper down during storage.

Printing / Assembly Instructions

1. Printing supports required on Flipper. No printing supports on Base.
2. Insert a 10x10mm magnet into the Base hinge side.
3. Insert a 10mm or 3/8in marble on each side of the magnet.
4. Install the flipper with an M3x18 screw from either side. Press the flipper until the ball retracts for ease of alignment. The flipper should rotate freely.
5. Before putting it in the pool, wrap a rubber band around the tile to lock the flipper down.