The new marble machine 2.1(A refined version of my earlier marble machine 2)
Marble machine 2.1 is a "new and improved" version of my old marble machine 2 that I build in 2000.
People often asked for plans for that machine, but the machine was totally cobbled together one piece at a time, so it wasn't the sort of thing I could draw plas for. So I designed and built a new and improved version of the machine in 2011. The design was modified so it would be easier to build from a set of plans
More about how the machine works
Building the machine: Condensed 20-minute video
Building the marble machine: More detailed 12-part series
"The new skype"
A goofy sort of video
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