Modular Marble Run Track

I received a request from my grandchildren for a marble run that they could design themselves. You can use any glass marble less than 20mm in diameter. Acceleration of the marble is from the drop tracks that drop at even 10mm heights. Assembly - The track is made to snap together allowing the builder to create almost infinite designs. - The clamp tacks (Connectors-v3.stl) allow for the curved tracks to turn in either direction. - The supports (Supports.stl) hold the tracks in place. The clips (Clips.stl) hold the supports onto 1/4" (6mm) dowels which I bought at a local hardware store. *** Contains small pieces. May pose a choking hazard ***