There are two versions of the lampshade, depending on the parity of the number of arms you want to use. If you use 2 arms, print Lampshade_even.stl, if you use 3 arms, print Lampshade_odd.stl
You can also use a clamp to keep the stand fixed to your desk, we used jakejake's Hand-Screw Clamp (Thank you) :
This design was part of our final project of study of engineering in Arts et Métiers ParisTech
Feel free to comment if you have any issue with the files or the printing or if you want us to send you the Fusion360 files.
Louis ROUANNE et Yassine BOUSSAID
The abat-jour can be printed without supports