Flexible/Bendable Brio rails in 3 sizes

Based on my basic Brio rails [1], I created flexible/bendable rails in three different sizes (S, M, L). I find these rails pretty helpful, as sometimes you just need on little rail that's missing and with these flexible rails, you can find a solution most of the time. 

Recommended print settings: Infill 15%, no supports, layer height: 0.2mm. I used Prusament PLA Gentleman's Grey - see pictures.

In the gcode files I set a slower first layer printing speed but a thicker first layer for better adhesion.

[1] Simple but useful Brio rails and connectors: https://www.printables.com/model/481302-simple-but-useful-brio-rails-and-connectors