A new GraviTrax trick to launch a cascade of marbles from a seesaw. It’s a tricky trick to make it work, but the wow factor is high. source

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Build working computers out of marble runs! Build a new digital logic circuit each week using the GraviTrax marble run system. source

I’m reviewing over 70 GraviTrax add-ons from 7 Etsy shops. In this episode, I review add-ons from TracksCreations. Add to your … source

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Here’s a great GraviTrax Trick! The 3-in-1 and 2-in-1 GraviTrax merge pieces are rare, because GraviTrax starter sets only contain … source

This is my reaction to the new GraviTrax Power trailer! The trailer shows the new POWER series elements soon to be released for … source

In GraviTrax Set vs. Set, we compare the contents of GraviTrax marble run sets. In this episode, we compare the GraviTrax Starter … source

3D print these Binary (Base 2) Place Value Landing Pad Inserts to build your own Binary Marble Computers using the GraviTrax … source

Build working computers out of marble runs! Build a new digital logic circuit each week using the GraviTrax marble run system. source