Michael Henriksen’s laser-cut marble machine sends 5mm ball bearings rolling through a spiraling track. You can adapt the machine to work either left or right handed, and works whether you crank it clockwise or counter-clockwise. He sells kits on his online store.

John Baichtal

John Baichtal

My interests include writing, electronics, RPGs, scifi, hackers & hackerspaces, 3D printing, building sets & toys. @johnbaichtal nerdage.net

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  • http://www.indianarog.com Roger Goodnow

    Michael’s design is brilliant…simple to assemble with all bits including balls included. I have mine on order now from http://www.bustedbricks.com Can’t wait to assemble it and have some fun with my grandson.

  • Phil Lawry

    I purchased one and had fun assembling it.
    Very popular with the family and visitors, a great talking point.
    I will be watching Michael’s website for more interesting items.