Just another two hour project: BRIO flex tracks
I used simple boolian operations on a standard BRIO railpart in tinkercad to make it flexible in all direction. Printing with a fast “single-line” stategie on Desktop FDM 3D-Printers – each piece takes as little as 20 minutes to produce.  When printed with the superstrong PLA-Hi from creamelt, those BRIO flex parts become indestructible. Read a nice appraisal about it here. (by Renate Menzi, the Curator of the Designcollection of the Museum für Gestaltung)

Files and more detailed infos about the print process can be found on thingiverse
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