Remembering our fallen with a Memorial Day marble run. Music is “The Stars and Stripes Forever” by John Philip Sousa, … source

I didn’t think this many GraviTrax Loops would work, lol. Watch the full video of this Pachinko marble run at … source

Have you ever wondered how a computer works? How it REALLY works? Introducing GraviCalc – a concept of 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

Sighting confirmed! The fabled blue box GraviTrax Speed Starter Set actually exists! Paid Links: Buy GraviTrax on Amazon: … source

My 2nd Grandfather Clock marble run plays Westminster Chimes and has a working moondial! This kinetic rolling ball sculpture is … source

I’m reviewing over 70 GraviTrax add-ons from 7 Etsy shops. In this episode, I review add-ons from Coogelbahn.de. I’m Chris … source

source

source

A GraviTrax marble run that spells out “GraviTrax Fans”, the name of the Facebook group for GraviTrax. GraviTrax App code to … source