.NC file.... WHY?

After spending about two hours, I have found that no software will open a .NC file to use. They all use .stl files and for some reason Fabber does not seem to be able to save the files to use anything other than a .txt file or .NC file… very frustrated right now. Spend almost 4 hours so far trying to get a single file to work with my M2

an NC file is a pretty standard file format for G Code, which is what Fabber makes.

What is it you’re trying to do?