A rubbing technique would penetrate through most if not all of the threads - about 0.34mm in diameter. The superficiality of the image on the fibers only penetrates 0.2 microns / a fraction of just one of the fibrils making up the thread.
My position do not hinge on it being a rubbing, though I think that is the most likely method. Rubbings can be done in different ways. I don't think it has been excluded that some method of rubbing over a bas-relief could have been how it was done. I'm not aware of any large testing of different methods and chemicals aimed at seeing if a discoloring of a very thin part of each fiber can be done. At most you can say that it has not been reproduced yet. I can see two other ways is could have been done and there might be other ways that I don't realize. The fact that it looks like the artifact is done by an artist that thought that showing the genitalia would be in bad taste, supports that it was made by a human, one way or another. That's convincing to me. If that is not convincing to you, that is fine.
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I'm with you on this hypothesis. 👍
A rubbing technique would penetrate through most if not all of the threads - about 0.34mm in diameter. The superficiality of the image on the fibers only penetrates 0.2 microns / a fraction of just one of the fibrils making up the thread.
My position do not hinge on it being a rubbing, though I think that is the most likely method.
Rubbings can be done in different ways. I don't think it has been excluded that some method of rubbing over a bas-relief could have been how it was done. I'm not aware of any large testing of different methods and chemicals aimed at seeing if a discoloring of a very thin part of each fiber can be done. At most you can say that it has not been reproduced yet.
I can see two other ways is could have been done and there might be other ways that I don't realize.
The fact that it looks like the artifact is done by an artist that thought that showing the genitalia would be in bad taste, supports that it was made by a human, one way or another. That's convincing to me. If that is not convincing to you, that is fine.
th-cam.com/video/UP6KzzAwgnk/w-d-xo.htmlsi=DlIuqhYyNUumDefL
Nothing new there.
Still looks like a work of art.