Gradient Pillars v2

Yet another version of my Gradient Pillars: tips and tricks are here, you can follow the originals instruction. Only different is that I places one central assembly column in the center on this. But I should say the cabling was very easy on that one.I hope someone comes up with improved version and I can print it :) I am very new to 3D modelling etc and using FreeCAD, any remix is appreciated.