3d Models for 3D print

[lkirit2000]

Hi

I would like to know what the best site to download 3D CAD files for 3D print

Thanks 

Kiri

[Lars_Greft]

Most of the time I use Thingiverse and Makerworld.

[Gabriel_Watson]

A few more here (I've known GrabCAD as the best one, but decided to list more here):
https://sketchfab.com/features/free-3d-models
https://grabcad.com/library
https://www.3dfindit.com/en/
https://3dwarehouse.sketchup.com/?hl=en

[Frederick_Law]

By Prusa:

https://www.printables.com/en/model