Install fstl by entering the following commands in the terminal:
sudo apt update sudo apt install fstl
Description:
Viewer for .stl files
fstl is a viewer for .stl files commonly used in stereolithography, rapid prototyping, 3D printing and CAM. . It is optimized to quickly load and render very high-polygon models.
Homepage: http://www.mattkeeter.com/projects/fstl/
Version: 0.9.2-1
Section: universe/graphics