Find out what is an STL file and how you can open and view an STL file with .stl extension in Windows 10. It is native to the stereolithography CAD software.

Download this guide and review Quality STL Files for Laser Sintering, the LS Advantages, Converting CAD, Slicing the STL, Building the Best and much more.

An imported STEP file is converted to a triangle mesh on import (making it much like a typical .stl or .3mf file) which means that slicing all happens as one would normally expect.