S2 · Short straight
Two grid steps of rail ladder.
Two printed side walls with rungs carry two acrylic or printed rails; the marble runs on the two rail edges, not on a floor.
- Footprint
- 2 steps, 100 mm
- Drop
- 5 mm, 5 %
- Moving parts
- none
- PLA, no supports, 1.4 h
- Bought parts
- none
The S2 is the smallest straight and the module every other module is measured against. Its keel sits in the pocket of two arms, one at each end. The 0.4 mm step down at each joint is built into the module, so the marble never meets an edge going uphill.
Other track
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