how do i turn a stl file to a wokrebole 3dm? tride folowing some instrucion i found but it just crashed
Can you send a picture of the model? Normally I would use quadremesh to Subd to NURBs. That can be easy for some models and much more difficult for others.
An STL of what? For what purpose? Reverse Engineering meshes to NURBS is the worst task in all of 3D-dom, unless it’s something very specific, it’s not something for a casual first attempt at doing something with Rhino. And random STLs you find off the Internet are 99% TRASH, not worth trying to do anything with.