Duplo Rail Track Collection
thingiverse
Great original design. The best available IMHO. I had to improve a few things for our purpose: Curve + Straight: 1. Raise center piece so action blocks work. 2. Remodel ends so standard Duplo blocks can connect like original Lego design. Crossing: 1. Remodel ends so standard Duplo blocks can connect like original Lego design. 2. Widen crossings so wide wheels can fit Notes: You may notice some small extra notches on the bottom. These are a) for cleaner printing in a continuous line on the base layer and b) for an 'invisible' connector system we use on our tracks.
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