Copyright is very interesting with this type of thing. If the Creative Commons license says commercial is ok (as opposed to non-commercial), you should be ok.

Keep in mind, the original designer technically owns the copyright. They have granted you the license to duplicate their design in physical form and sell it.

So, you do not get the rights to the design, you only get a license to use the design.

Even if you make a derivative work (you modify it, to make a "new" design), it is still based on their design and they have rights to your new creation.

HOWEVER, I have been told by lawyers that once you get all legal about this, things change. If someone truly wanted to sue, the court system only acknowledges copyrights that have been registered. I would be surprised if there are many copyrighted designs that individuals have made.

Of course, this is no reason to blatantly take someone's design (because you know they cannot sue), but it is something to be aware of.

Also, due to the DMCA (Digital Media Copyright Act), if you accidentally put up copyrighted material, it is very easy for the copyright owner to request for it to be removed and for it to come down quickly. The process is very streamlined...

Drew Taylor
https://3Dagogo.com