3D Printed articulated desk Led lamp

I loved the idea to create my own lamp, but I needed it for my desk. I printed everything, but when I tried to fix it into my desk, there was an issue, so I have to modified the wall_joint stl file to be square in its foot, so it doesn't allow to move between left & right. I used OpenScad and just imported the STL and then just do whatever I need to do.
It is perfect now!

I used 4 m3x16 + nuts to fix it into the table (2) and to fix the lamp switch into its arm. I have to do that with a 3mm