Brio-Duplo Adapter Remix (minimalist design)
Description
Adapter to connect the top of a 2x2 LEGO Duplo block to the bottom of wooden train tracks. In this remix, I made the hole slightly bigger (just 0.6 mm). I printed the original first but found it was very tough to connect to the Duplo block (I managed to force it on, but it left a mark on the Duplo block and my toddler won't be able to get it on or off). **This new size is just right** - it has some friction to keep it secure while being loose enough that a 4 year-old can do it and can still rotate it around to be any angle. In hindsight, I also find the track side to be a bit tight - maybe in the future I'll make that wider too. But it's very usable as-is. In the current design, you have to squeeze the track on with some force - snapping it in place - which means it's tough to remove sometimes but at least the **track does not fall out**. Note: I'm using **Brio** brand train tracks and **LEGO** brand Duplo blocks (in case that matters). And I printed in ABS. I modified the original design simply by importing the stl into **OpenSCAD** and subtracting a bigger cylinder to make the hole bigger. So if you want to edit it further, then download `slightly_bigger_hole.scad` and the original stl (`Brio-Duploadapter-v2.stl`). Or, if you're fine with my version, then you only need `slightly_bigger_hole.stl`.
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