If the model author changes the license after you download it, that's ok, but the the license you received it under will always prevail. No Derivatives and ShareAlike are mutually exclusive.

CC0 - Public Domain: No Rights Reserved.

CC BY-SA - ShareAlike: depending on the NC choices, others may share, edit, and use the model, but derivative work must be shared under the same license.

CC BY-ND - NoDerivatives: others may use and share the model, but it cannot be altered.

CC BY-NC - NonCommercial: others cannot use your model commercially.

CC BY - Attribution: depending on the NC, ND, and SA choices, others may share, edit, and use the model, but they must give you credit for the original work.

If you're unsure how you can use a downloadable 3D model, review the details of the corresponding Creative Commons license: LicensesĮach downloadable model is offered under a Creative Commons license, which means if you download a free 3D model and you want to use it or build upon it, you need to credit the creator (except for CC0). If you'd like to request a user reconsider offering their model for download, feel free to politely comment on their model page, or, if they are a Pro (or above) user, you can request so via the Contact button on their profile.

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