GraviTrax testing SEVEN cannons and smashing marbles!

This is a cool test with SEVEN GraviTrax magnetic cannons, including three that are home-made using 3D printing!! Cannons are super useful in GraviTrax because they let you get the marble up higher for longer runs.

Amazon links:
-- https://amzn.to/3pCkYFp (GraviTrax Starter Set - 1 cannon)
-- https://amzn.to/3ohqywR (GraviTrax extra cannon)
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