Fully 3D printed parametric curtain rails

This model is made out of 4 parts. The connector (blue item in render), the rail and rail end, and last but not least the hooks. 

The connector can be screwed in with a M4 screw. The rails are 100mm long but they are designed so you can scale them in the length to your needs. 

I haven't had time to test them yet so if there would be something wrong, comment it and I'll try to fix it!