Stand for 14'' laptops such as lenovo IdeaFlex.
The angle of the stand is 20 degrees.
To assemble the stand you will also need 4X 16mm M3 screws.
At the bottom of each bracket there are 3 slots in which you can glue 10mm rubber feet. I advice you to do so because most 3d printed plastics are quite slippery on most surfaces.
Doesn't need supports.
If you are using Cura consider enabling the adaptive layers option as it will speed the process quite a bit (and it will make the holes a lot better).
PLA works just fine. The design is pretty strong so no special filament is needed.
Infill for the brackets should be around 20% (maybe even less). Use whatever infill prints fastest no need for gyroid or any heavy dutty infill.
Infill for the adapters (the two long pieces that hold everything together) needs to be a bit thicker around 35%.
No supports needed. Overall its a pretty easy print.