Brio wooden train bridge supports that uses Duplo lego as pillars. With this collection you should be able to build as complex bridges as you like. Remix reasons I had some problem with small parts that didn't stick to the platform on the first few layers resulting in a failed print so I added some extra supports to them so now they are connected to the outer shell. I also made the angle with a radius so the battery driven trains gets better grip. 2014-01-18 For some reason the flat bit was a few mm to high, the part was still useful but I had to fix it.These are my settings: layer height = 0.18 perimeters = 3 top solid layers = 4 bottom solid layers = 3 fill density = 0.1 perimeters extrusion width = 0.30mm infill extrusion width = 0.50mm solid infill extrusion width = 0.35mm top infill extrusion width = 0.30mm first layer extrusion width = 0.50mm