Straight Duplo track of 12 duplo studs, equal to about 120 LU (Lego Units, one is 1.6mm).
We (me & son) need them to build looooong bridges ;-)
This one is a test run. If it works more or less ok, i'm gonna print few more.
It was generated and fine tuned from a OpenSCAD model available on Thingiverse.
I have my own brick OpenSCAD script, which generates better print models, but my script is inferior in parametriztion and it's not that easy to integreate it.
