What does “Open Source” mean here? The given explanation appears to have some translation issues.
“Check off” normally means “check,” but are you using it to mean “uncheck”?
Does it mean “open source” in the licensing sense? These files are CC-BY-NC-ND, so should I uncheck it?
What are “cloud slicing algorithms”? Slicing doesn’t occur in the cloud afaik.
Edit: My main concern is that “Open source” is being used incorrectly, and it sounds like a more permissive license than I want to apply. Also, the “source” of a 3D project is the CAD file, not the model files (STEP or STL).
I can’t answer any of the questions, but since “recently” I’ve tried to download some source files attached to MW models… These are listed in the “Download STL/CAD files” popup, but the download buttons are disabled, and when hovered a tooltip says “Closed source file. Not available for download.” The listings themselves have permissive licenses.
Here’s one: https://makerworld.com/en/models/1970852-j1772-adapter-charger-wall-mount
I can only assume that the “open source” checkbox wasn’t checked… but none of that makes any sense (why’d someone upload the file in the first place?). Maybe I just never ran into a listing like this before, but now stumbled on a few by chance in the last month or so…? Just odd. 
Cheers,
-Max
In my case, some followers have directly asked me to upload the .step files. I infer that it’s generally so they can use other slicers. I’m happy to help with this.
It may just be a mistake made in the latest update for the site. Normally, “open source” would only be an option for project files, such as an .f3d fusion project. Open source means they can download and modify your project file directly with the full history/timeline of your work included. Unchecking open source would still allow them to customize the model parameters you set through the online customize tool, but not allow them to download the .f3d (or other source files).
But with model files such as .stl or .step, that’s not possible, and the licensing is separate. So I’m guessing it’s a simple mistake in coding somewhere. Unchecking it does still disable the download option for raw files though. So if you intend to put up a .step file for people to download, you’ll need to leave it checked.
But no, people don’t generally ask for .step files for use in other slicers, .step files are just easier to modify in modeling software. Importing .stl’s is often a mess and require lots of cleanup before any real changes can be made. They’re also much smaller file sizes.
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