Our GraviTrack Marble Machine Kit is our newest addition to the Marble-Drop mechanism family. Elegant, swooping hands pass marbles to each other to the top of a sweeping multi-level track, available in either solar or battery configuration! Approximately twice as wide as our spiral Solar or Battery Marble machine kits, the GraviTrack is still desk-top […]
Push Pin Videos
Dave Hrynkiw
August 1, 2001
We've had some requests on exactly what do the pushpins do. So, we added videos for two of them.
Push Pin 1 (Masher Point)
Push Pin 3 (Chisel Point)
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Warning: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Please visit www.P65Warnings.ca.gov for more information. This item was manufactured prior to August 31, 2018.