Quite some time ago (in 2010) David Harvey created a depthmap file of the Aztec calendar to engrave in 3D, and he offered to share it with everyone here via email (because the file is too large to post here).

I've tried several times to contact David without success, both by PM here and via email. He hasn't been on here for awhile.

If anyone received the depthmap from him and is willing to share, I really would appreciate receiving a copy.

Many thanks,

Ric