Very cool marble run toy - it feeds the marbles and they go down different ways to play xylophone, move toys, etc. Woodworking plan to build it yourself!

Very cool marble run toy - it feeds the marbles and they go down different ways to play xylophone, move toys, etc. Woodworking plan to build it yourself!

We've been staring at this mesmerizing solar-powered marble machine kit all morning…

We've been staring at this mesmerizing solar-powered marble machine kit all morning…

Ronald Walter's marble machine-click to go to site and watch the video on how this amazing machine works.

Ronald Walter's marble machine-click to go to site and watch the video on how this amazing machine works.

Seven amazing marble machines with videos of each one in operation. Created by Paul Grundbacher.

Seven amazing marble machines with videos of each one in operation. Created by Paul Grundbacher.

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