Brass challenge coin/ bas relief

Well there was this:

ideally everything one would need to know would be at:

https://my.carbide3d.com/

supplemented by a search such as:

or

https://community.carbide3d.com/search?q=brass

For detail in brass MeshCAM may be a good option, esp. for 3D.

There is of course also:

and

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