Flex rails for Fischertechnik track ball system.

Flex rails for Fischertechnik track ball system.
The original flex rails are only available in 2 sizes. By making multiple lengths via 3D printing you have a lot of possibilities for building the ball track. Bending the original flex rails is not always easy. That's why I made several circular versions here. They are available in 90, 180 and 270 degrees. The diameters are 60, 90 and 120mm. They are not intended to bend further to another diameter although it remains possible. You can place the