PT Polocies and FAQ

[Orion Pobursky]

Missing the instruction for the case where Third Party parts manufacturers are providing 3D models itself (including in LDraw format) under CC-BY-SA/GPL/other Copyleft policy or under CC-BY-NC (Editiorial usage only).

There's one allowable license for new parts: CC BY 4.0 (CC0 technically isn't a license). If it can't be released using that license (or in the public domain) and the author of that file doesn't agree to the Contributor Agreement, then it won't be added to the library. I'm not complicating the library with a bunch of different (and possibly conflicting) licenses.

Is it possible to create LDraw part for Parts Library from scratch and what policy it should be assigned to?

I'm confused on the context of this question.

Also, if manufacturers provided parts in LDraw format under CC BY from own site, could be such parts directly copied to PT and what "Author" should be set in a such case.

No. In the case of an author releasing CC BY 4.0 parts on their own, they still cannot be added to the library unless that author agrees to our Contributor Agreement. Public domain files can be added under CC0.

TL;DR: If you didn't author the part or you didn't derive the part from an authorized source, you cannot submit it to the library.